Lennart Löfdahl
Professor vid
Fordonsteknik och autonoma system
Lennart Löfdahl är professor i Fluid Dynamics sedan 2000. Hans forskningsområden inkluderar strömningsstabilitet, turbulens och dess modellering samt användning av ”Micro Electro Mechanical Systems” (MEMS) teknologier för strömningskontroll. Under de senaste tjugo åren har professor Löfdahl ägnat större delen av sin forskning åt optimering av fordon inom områdena Aero- och Termodynamik. Avancerad experimentell teknik och CFD-metoder har använts för att minska bränsleförbrukningen och emissioner på såväl lätta som tunga fordon.
Källa: chalmers.se
Visar 236 publikationer
2020
Calibration Optimization Methodology for Lithium-Ion Battery Pack Model for Electric Vehicles in Mining Applications
Majid Astaneh, Jelena Andric, Lennart Löfdahl et al
Energies. Vol. 13 (14), p. 3532-
Artikel i vetenskaplig tidskrift
2019
A Coupled 1D–3D Numerical Method for Buoyancy-Driven Heat Transfer in a Generic Engine Bay
Blago Minovski, Lennart Löfdahl, Jelena Andric et al
Energies. Vol. 12 (21), p. 4156-
Artikel i vetenskaplig tidskrift
2019
A numerical investigation of thermal engine encapsulation concept for a passenger vehicle and its effect on fuel consumption
Blago Minovski, Jelena Andric, Lennart Löfdahl et al
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. Vol. 233 (3), p. 557-571
Artikel i vetenskaplig tidskrift
2018
Experimental Investigation of the Near Wall Flow Downstream of a Passenger Car Wheel Arch
Sabine Bonitz, D. Wieser, Alexander Broniewicz et al
SAE International Journal of Passenger Cars - Mechanical Systems. Vol. 11 (1)
Artikel i vetenskaplig tidskrift
2018
Aerodynamic Analysis of Cooling Airflow for Different Front-End Designs of a Heavy-Duty Cab-Over-Engine Truck
Helena Martini, Peter Gullberg, Lennart Löfdahl
SAE International Journal of Commercial Vehicles. Vol. 11 (1)
Artikel i vetenskaplig tidskrift
2018
Numerical investigation of crossflow separation on the a-pillar of a passenger car
Sabine Bonitz, Lars Larsson, Lennart Löfdahl et al
Journal of Fluids Engineering, Transactions of the ASME. Vol. 140 (11)
Artikel i vetenskaplig tidskrift
2017
Force Based Measurement Method for Cooling Flow Quantification
Teddy Hobeika, Peter Gullberg, Simone Sebben et al
SAE International Journal of Passenger Cars - Mechanical Systems. Vol. 10 (2), p. 619-627
Artikel i vetenskaplig tidskrift
2017
Experimental and numerical investigations of cooling drag
Teddy Hobeika, Simone Sebben, Lennart Löfdahl
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering. Vol. 231 (9 (SI)), p. 1203-1210
Artikel i vetenskaplig tidskrift
2016
Theorie und Grundlagen der Stromlinje – Fahrzeugaerodynamik heute – Wohin geht der weg?, Strom Linien Form - Die Faszination des geringen Widerstands
Lennart Löfdahl
Bok
2016
Investigations of the Rear-End Flow Structures on a Sedan Car
Charlampos Kounenis, Sabine Bonitz, Emil Ljungskog et al
SAE Technical Papers
Paper i proceeding
2016
Vehicle Aerodynamics and Thermal Management in Future Hybrid and Electrical Vehicles
Lennart Löfdahl
Elektrik/Elektronik in Hybrid- undt Elektrofahrzeugen und Energimanagement VII (EEHE), Editors, C. Hoff & O. Sirch, Haus der Technik, Expert Verlag
Paper i proceeding
2016
Qualitative tuft flow visualization on the volvo S60 under realistic driving conditions
D. Wieser, Sabine Bonitz, Christian Nayeri Navid et al
54th AIAA Aerospace Sciences Meeting, 2016, San Diego, United States, 4-8 January 2016
Paper i proceeding
2016
Numerical Investigation of Natural Convection in a Simplified Engine Bay
Blago Minovski, Lennart Löfdahl, Peter Gullberg
SAE Technical Papers (April)
Artikel i vetenskaplig tidskrift
2016
Numerical implementation of Detached Eddy Simulation on a passenger vehicle and some experimental correlation
Lennert Sterken, Simone Sebben, Lennart Löfdahl
Journal of Fluids Engineering, Transactions of the ASME. Vol. 138 (9), p. Art.no. 091105-
Artikel i vetenskaplig tidskrift
2016
Quantitative Tuft Flow Visualization on the Volvo S60 under realistic driving Conditions
D. Wieser, Sabine Bonitz, Ture Jesper Marklund et al
54th AIAA Aerospace Sciences Meeting 2016
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2016
Flow Structure Identification over a Notchback Vehicle
Sabine Bonitz, Lars Larsson, Lennart Löfdahl et al
International Conference on Vehicle Aerodynamics
Paper i proceeding
2016
Surface Flow Visualization on a Full-Scale Passenger Car with Quantitative Tuft Image Processing
D. Wieser, Sabine Bonitz, Alexander Broniewicz et al
SAE Technical Papers (April)
Paper i proceeding
2016
On the Possibilities and Limitations of Wind Noise Testing in the Aerodynamical Wind Tunnel at Volvo Cars
Olga Roditcheva, Lennart Löfdahl, Simone Sebben et al
SAE Technical Papers. Vol. 2016-June (June)
Paper i proceeding
2016
Wheel housing aerodynamics on heavy trucks
David Söderblom, P. Elofsson, Linus Hjelm et al
Lecture Notes in Applied and Computational Mechanics, p. 211-223
Kapitel i bok
2015
Structures of Flow Separation on a Passenger Car
Sabine Bonitz, Lars Larsson, Lennart Löfdahl et al
SAE International Journal of Passenger Cars - Mechanical Systems. Vol. 8 (1), p. 177-185
Artikel i vetenskaplig tidskrift
2015
Wake and Unsteady Surface-Pressure Measurements on an SUV with Rear-End Extensions
Lennert Sterken, Thies Wölken, Simone Sebben et al
SAE Technical Papers: SAE 2015 World Congress and Exhibition, Cobo Center, Detroit, United States, 21-23 April 2015. Vol. 2015 (April)
Paper i proceeding
2015
Numerical and Experimental Investigations of Brake Cooling for Passenger Cars
Alexey Vdovin, Lennart Löfdahl, Simone Sebben
ATA - Ingegneria dell’Autoveicolo. Vol. 68 (5/10), p. 11-21
Artikel i vetenskaplig tidskrift
2015
A 1D Method for Transient Simulations of Cooling Systems with Non-Uniform Temperature and Flow Boundaries Extracted from a 3D CFD Solution
Blago Minovski, Lennart Löfdahl, Peter Gullberg
SAE Technical Papers: SAE 2015 World Congress and Exhibition; Cobo CenterDetroit; United States; 21 April 2015 through 23 April 2015 (April)
Paper i proceeding
2015
CFD Simulations of one Period of a Louvered Fin where the Airflow is Inclined Relative to the Heat Exchanger
Lisa Henriksson, Peter Gullberg, Dahl Erik et al
SAE International Journal of Engines. Vol. 8 (4)
Artikel i vetenskaplig tidskrift
2015
On the Aerodynamic Performance of two Silver Arrows from the Thirties
Lennart Löfdahl, Teddy Hobeika, Alexey Vdovin
Stuttgart International, Automotive and Engine Technology, 17th 18th March 2015. Vol. 1
Paper i proceeding
2015
CFD Simulations of one Period of a Louvered Fin where the Airflow is Inclined Relative to the Heat Exchanger
Lisa Henriksson, Peter Gullberg, Dahl Erik et al
SAE World Congress 2015, Detroit, USA. SAE Paper 2015-01-1656
Paper i proceeding
2015
Experimental investigation of heat transfer rates and pressure drops through compact heat exchangers: Where the Heat Exchanger is Angled Relative to the Incoming Airflow
Lisa Henriksson, Dahl Erik, Peter Gullberg et al
International Journal of Automotive Engineering. Vol. 6 (1), p. 7-14
Artikel i vetenskaplig tidskrift
2014
Effect of rear-end extensions on the aerodynamic forces of an SUV
Lennert Sterken, Lennart Löfdahl, Thies Wölken et al
SAE Technical Papers. Vol. 1
Paper i proceeding
2014
Experimental Investigation of Heat Transfer Rates and Pressure Drops through Compact Heat Exchangers
Lisa Henriksson, Peter Gullberg, Dahl Erik et al
JSAE Annual Congress on 5, 22 ,2014. Paper 220145253
Paper i proceeding
2014
Experimental Investigation of Heat Transfer Rate and Pressure Drop through Angled Compact Heat Exchangers Relative to the Incoming Airflow
Lisa Henriksson, Dahl Erik, Peter Gullberg et al
SAE International Journal of Commercial Vehicles. Vol. 7 (2)
Artikel i vetenskaplig tidskrift
2014
A Computational Investigation of Ground Simulation for a Saloon Car
Adrian Philip Gaylard, Lennart Löfdahl, Sofie Koitrand et al
SAE International Journal of Passenger Cars - Mechanical Systems. Vol. 7 (1), p. 111-123
Artikel i vetenskaplig tidskrift
2014
Investigation of vehicle ride height and wheel position influence on the aerodynamic forces of ground vehicles
Alexey Vdovin, Simone Sebben, Tim Walker et al
International Vehicle Aerodynamics Conference, p. 81-90
Paper i proceeding
2014
Effect of the traversing unit on the flow structures behind a passenger vehicle
Lennert Sterken, Simone Sebben, Tim Walker et al
IMechE International Vehicle Aerodynamics Conference
Paper i proceeding
2014
Comparative Studies between CFD and Wind Tunnel Measurements of Cooling Performance and External Aerodynamics for a Heavy Truck
Helena Martini, Peter Gullberg, Lennart Löfdahl
SAE International Journal of Commercial Vehicles. Vol. 7 (2)
Artikel i vetenskaplig tidskrift
2014
Influence of Rims and Tyres on the Aerodynamic Resistance of Passenger Vehicles
Teddy Hobeika, Alexey Vdovin, Lennart Löfdahl
11th Conference Aerodynamik Kraftfahrzeug
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2014
Study of different tyre simulation methods and effects on passenger car aerodynamics
Teddy Hobeika, Simone Sebben, Lennart Löfdahl
International Vehicle Aerodynamics Conference, p. 187-195
Paper i proceeding
2014
Study of Software Integration for Transient Simulation of Future Cooling System for Heavy Truck Application
Blago Minovski, Lennart Löfdahl
SAE International, SAE Technical Paper 2014-01-0653, 2014, doi:10.4271/2014-01-0653.
Paper i proceeding
2014
Vehicle Aerodynamics and Thermal Management in Future Hybrid and Electrical Vehicles
Lennart Löfdahl
Energy Efficient Vehicles, Visions, Trends and Solutions for Energy Efficient Vehicle Systems, Editors; B. Bäker & L. Morawietz, Institut für Automobiltechnik, Dresden, TUD Press
Paper i proceeding
2014
Investigation of three-dimensional flow separation patterns and surface pressure gradients on a notchback vehicle
Sabine Bonitz, Lennart Löfdahl, Lars Larsson et al
Imeche (Hg.) 2014 – International vehicle aerodynamics conference, p. 55-65
Paper i proceeding
2014
Investigation of Wheel Aerodynamic Resistance of Passenger Cars
Alexey Vdovin, Lennart Löfdahl, Simone Sebben
SAE International Journal of Passenger Cars - Mechanical Systems. Vol. 7 (2), p. 639-645
Artikel i vetenskaplig tidskrift
2013
CFD simulation and experimental investigation of pressure-drop through 90° and 30° angled compact heat-exchangers relative to the oncoming airflow
Lisa Larsson, Lennart Löfdahl, Peter Gullberg et al
Vehicle Thermal Management Systems Conference, VTMS11; Coventry; UK; 15-16 May 2013, p. 295-305
Paper i proceeding
2013
Investigation of Wheel Ventilation-Drag using a Modular Wheel Design Concept
Alexey Vdovin, Sabine Bonitz, Christoffer Landström et al
SAE International Journal of Passenger Cars - Mechanical Systems. Vol. 6 (1), p. 308-315
Artikel i vetenskaplig tidskrift
2013
Experimental and Numerical Investigations of the Base Wake on an SUV
Lennert Sterken, Lennart Löfdahl, Simone Sebben et al
SAE Technical Papers: SAE 2013 World Congress and Exhibition; Detroit, MI; United States; 16 April 2013 through 18 April 2013. Vol. 2
Paper i proceeding
2013
Performance of an Automotive Under-Body Diffuser Applied to a Sedan and a Wagon Vehicle
Ture Jesper Marklund, Lennart Löfdahl, Håkan Danielsson et al
SAE International Journal of Passenger Cars - Mechanical Systems. Vol. 6 (1), p. 293-307
Artikel i vetenskaplig tidskrift
2013
CFD Method and Simulations on a Section of a Detailed Multi-Louvered Fin where the Incoming Air is Directed at 90° and 30° Relative to the Compact Heat-Exchanger
Lisa Henriksson, Erik Dahl, Peter Gullberg et al
SAE 2013 Commercial Vehicle Engineering Congress (SAE Technical Paper), p. paper no. 2013-01-2417-
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2012
Experimental and Numerical Investigation of Wheel Housing Aerodynamics on Heavy Trucks
David Söderblom, Elofsson Per, Linus Hjelm et al
SAE International Journal of Commercial Vehicles. Vol. 5 (1), p. 29-41
Artikel i vetenskaplig tidskrift
2012
Aerodynamic Wheel Force Measurements on a Detailed Scale-Model Car – Possibilities and Challenges
Alexey Vdovin, Lennart Löfdahl, Christoffer Landström
8th International Symposium on Strain-Gauge Balances, May 7–10, 2012, Lucerne, Switzerland
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2012
Aerodynamics of passenger vehicles - bluff bodies
Ture Jesper Marklund, Lennart Löfdahl
The Vehicle Component. Vol. 2012 (1)
Artikel i övriga tidskrifter
2012
Yaw- and Trailer Dependence for Rear-Mounted Cooling Installations for Heavy Vehicles
Lisa Larsson, Lennart Löfdahl, Erik Dahl et al
ASME Fluids Engineering Division Summer Meeting (FEDSM), Rio Grande, PR, JUL 08-12, 2012 (PARTS A AND B), p. 31-40
Paper i proceeding
2012
Fordonsaerodynamik - trubbig kropp
Ture Jesper Marklund, Lennart Löfdahl
Fordonskomponenten. Vol. 2012 (1), p. 20-23
Artikel i övriga tidskrifter
2012
Aerodynamic Investigation of Gap Treatment- and Chassis Skirts Strategies for a Novel Long-Haul Vehicle Combination
Helena Martini, Björn Bergqvist, Linus Hjelm et al
SAE Commercial Vehicles
Paper i proceeding
2012
Influence of a Diffuser to the Wake Flow of a Passenger Car
Ture Jesper Marklund, Lennart Löfdahl
FEDSM2012 ASME 2012 Fluids Engineering Summer Meeting, July 8-12, 2012, Rio Grande, Puerto Rico, USA (PARTS A AND B), p. 53-62
Paper i proceeding
2012
Experimental and Numerical Investigation of Wheel Housing Aerodynamics on Heavy Trucks
David Söderblom, Linus Hjelm, Lennart Löfdahl
SAE World Congress 2012
Paper i proceeding
2012
Aerodynamic Effects of Different Tire Models on a Sedan Type Passenger Car
Christoffer Landström, Lennart Löfdahl, Walker Tim et al
SAE International Journal of Commercial Vehicles. Vol. 5 (1), p. 136-151
Artikel i vetenskaplig tidskrift
2012
Road Vehicle Aerodynamics at Chalmers University and Forces Acting on the Rotating Wheel
Alexey Vdovin, Lennart Löfdahl
IQPC International Forum Future Automotive Aerodynamics, 26 - 27 November 2012, Berlin, Germany
Poster (konferens)
2012
Aerodynamic Effects of Different Tire Models on a Sedan Type Passenger Car
Christoffer Landström, Lennart Löfdahl, Walker Tim et al
2012 SAE World Congress in Detroit
Paper i proceeding
2012
Alternative Approach in Ground Vehicle Wake Analysis
Lennert Sterken, Lennart Löfdahl, Simone Sebben et al
World Academy Of Science, Engineering and Technology. Vol. 68, p. 104-111
Paper i proceeding
2011
Wing-diffuser interaction on a sports car
Lasse Malmkjaer Christoffersen, David Söderblom, Lennart Löfdahl et al
SAE Technical Papers
Artikel i vetenskaplig tidskrift
2011
Cooling Airflow System Modeling in CFD Using Assumption of Stationary Flow
Peter Gullberg, Lennart Löfdahl, P. Nilsson
SAE 2011 Commercial Vehicle Engineering Congress, COMVEC 2011, Rosemont, IL, United States, 13-14 September 2011
Paper i proceeding
2011
Aerodynamic Effects of Roof Deflector and Cab Side Extenders for Truck-Trailer Combinations
Helena Martini, Björn Bergqvist, Linus Hjelm et al
SAE Technical Papers
Paper i proceeding
2011
Wing-Diffuser Interaction on a Sports Car
Lasse Malmkjaer Christoffersen, David Söderblom, Lennart Löfdahl et al
SAE technical paper. SAE 2011 World Congress and Exhibition, Detroit, 12 April 2011
Paper i proceeding
2011
Cooling Performance Investigation of a Rear Mounted Cooling Package for Heavy Vehicles
Lisa Larsson, Torbjörn Wiklund, Lennart Löfdahl
SAE World Congress 2011, 12-14 April, Detroit, USA
Paper i proceeding
2011
Role of Aerodynamics and Thermal Management in the Vehicles of Tomorrow
Lennart Löfdahl
Energy Efficient Vehicle Technology I, Editors; B. Bäker & L. Morawietz, Institut für Automobiltechnik, Dresden, Expert Verlag
Paper i proceeding
2011
Fan Modelling in CFD Using RANS with MRF, Limitations and Consistency, a Comparison between Fans of Different Design
Peter Gullberg, Lennart Löfdahl
Institution of Mechanical Engineers - VTMS 10, Vehicle Thermal Management Systems Conference and Exhibition, p. 423-433
Paper i proceeding
2011
Influences of Different Front and Rear Wheel Designs on Aerodynamic Drag of a Sedan Type Passenger Car
Christoffer Landström, Tim Walker, Lasse Malmkjaer Christoffersen et al
SAE technical paper. SAE 2011 World Congress and Exhibition, Detroit, 12 April 2011
Paper i proceeding
2011
FAN MODELING IN CFD USING MRF MODEL FOR UNDER HOOD PURPOSES
Peter Gullberg, Lennart Löfdahl
Proceedings of ASME-JSME-KSME Joint Fluids Engineering Conference 2011
Paper i proceeding
2011
Influence of Different Truck and Trailer Combinations on the Aerodynamic Drag
Helena Martini, Björn Bergqvist, Linus Hjelm et al
SAE 2011 World Congress and Exhibition; Detroit, 12 April 2011
Paper i proceeding
2011
Continuing Cooling Performance Investigation of a Rear Mounted Cooling Package for Heavy Vehicles
Lisa Larsson, Lennart Löfdahl, Erik Dahl et al
SAECommercial Vehicles 2011, 13-14 September, Chicago, USA
Paper i proceeding
2011
Investigation of Aerodynamic Wheel Designs on a Passenger Car at Different Cooling Air Flow Conditions
Christoffer Landström, Lennart Löfdahl
Proceedings of ASME-JSME-KSME Joint Fluids Engineering Conference 2011. Vol. 1 (PARTS A, B, C, D), p. 985-994
Paper i proceeding
2010
DRAG AND LIFT MEASUREMENTS OF FOUR BLUFF BODIES
Ture Jesper Marklund, Lennart Löfdahl
General Motors Vehicle Development Research Lab, May 2010, Detroit, USA
Paper i proceeding
2010
Effects of wheel orientation on predicted flow field and forces when modelling rotating wheels using CFD
Christoffer Landström, Simone Sebben, Lennart Löfdahl
8th MIRA International Vehicle Aerodynamics Conference
Paper i proceeding
2010
Interference between engine bay flow and external aerodynamics of road vehicles
Lasse Malmkjaer Christoffersen, Lennart Löfdahl, A. Jönson
SAE Technical Papers
Artikel i vetenskaplig tidskrift
2010
Wheel Housing Aerodynamics on Heavy Trucks
David Söderblom, Per Elofsson, Linus Hjelm et al
The Aerodynamics of Heavy Vehicles III: Trucks, Buses and Trains. Potsdam, GERMANY. September 12-17, 2010
Paper i proceeding
2010
Secondary instability of a swept-wing boundary layer disturbed by controlled roughness elements
Valery Chernoray, A. V. Dovgal, V. V. Kozlov et al
Journal of Visualization. Vol. 13 (3), p. 251-256
Artikel i vetenskaplig tidskrift
2010
Flow Field Investigation of the Wheel Housing Opening Shape on Heavy Truck Using CFD
David Söderblom, Per Elofsson, Linus Hjelm et al
8th MIRA International Vehicle Aerodynamics Conference, p. 387-400
Paper i proceeding
2010
Continued Study of the Error and Consistency of Fan CFD MRF Models
Peter Gullberg, Lennart Löfdahl, Peter Nilsson et al
SAE Technical Papers
Paper i proceeding
2010
Effects of Ground Simulation on the Aerodynamic Coefficients of a Production Car in Yaw Conditions
Christoffer Landström, Tim Walker, Lennart Löfdahl
SAE 2010 World Congress and Exhibition; Detroit, MI; United States; 13 April 2010 through 13 April 2010
Paper i proceeding
2010
Wheel Aerodynamic Developments on Passenger Cars by Module-based Prototype Rims and Stationary Rim Shields
Qui Zhiling, Christoffer Landström, Lennart Löfdahl et al
FISITA 2010 Automotive World Congress
Paper i proceeding
2010
WAKE MEASUREMENT OF A SIMPLE BLUFF BODY WITH VARYING REAR END DESIGN AND CLOSE PROXIMITY TO GROUND
Ture Jesper Marklund, Lennart Löfdahl
ASME, FEDSM2010, August 1-5, 2010, Montreal, CANADA
Paper i proceeding
2009
FLOW FIELD AROUND AND IN A SAAB 9-3 CONVERTIBLE
Ture Jesper Marklund, Lennart Löfdahl, Håkan Danielsson
EUROMECH COLLOQUIUM 509,External aerodynamics of Railway Vehicles Trucks Buses and Cars, Berlin, Germany, March 24--25, 2009, p. 144-157
Paper i proceeding
2009
Lägre bränsleförbrukning med hjälp av vindtunneltestning
Christoffer Landström, Lennart Löfdahl
Automotive Sweden - Nyheter i fordonsbranschen Nr 1 2009 (1)
Artikel i övriga tidskrifter
2009
Detailed flow studies in close proximity of rotating wheels on a passenger car
Christoffer Landström, Lennart Löfdahl, Tim Walker
SAE International Journal of Passenger Cars - Mechanical Systems. Vol. 2 (1), p. 861-874
Artikel i vetenskaplig tidskrift
2009
Drag Reduction of a Simple Bluff Body by Changing The Rear End
Ture Jesper Marklund, Lennart Löfdahl
2009 ASME Fluids Engineering Division Summer Conference, FEDSM2009; Vail, CO; United States; 2 August 2009 through 6 August 2009, p. 291-296
Paper i proceeding
2009
Influence of Aerodynamics on the Fatal Crash in Le Mans 1955
Peter Gullberg, Lennart Löfdahl, Zhiling Qiu
European Automotive Simulation Conference
Paper i proceeding
2009
A Correction Method for Stationary Fan CFD MRF Models
Peter Gullberg, Lennart Löfdahl
SAE World Congress & Exhibition
Paper i proceeding
2009
Optimizing the Cooling Air Flow of a Formula Car Using CFD
Lasse Malmkjaer Christoffersen, David Söderblom, Lennart Löfdahl
Proceedings of the European Automotive Simulation Conference
Paper i proceeding
2009
High Level Geometry Restoration for CFD Purposes in ANSA
Peter Gullberg, Lennart Löfdahl
3rd ANSA & META International Conference
Paper i proceeding
2009
Heavy Vehicle Wheel Housing Flows - a Parametric Study
David Söderblom, Lennart Löfdahl, Per Elofsson et al
SAE/SP-2226
Paper i proceeding
2009
The Aerodynamics of Cooling Air Inlets of Road Vehicles
Lasse Malmkjaer Christoffersen, Lennart Löfdahl
Proceedings of the 7th FKFS conference on Progress in Vehicle Aerodynamics and Thermal Management
Paper i proceeding
2009
Implementing Advanced CAE Tools in Automotive Engineering Education at Chalmers University of Technology
Lasse Malmkjaer Christoffersen, Christoffer Landström, Lennart Löfdahl
3rd ANSA and META International Conference, September 9-11, 2009, Greece
Paper i proceeding
2009
A Numerical Investigation of the Influence of Moving Ground and Rotating Wheels on Heavy Duty Vehicle Cooling Performance
Peter Gullberg, David Söderblom, Lennart Löfdahl
SAE World Conference, 20-23 April, Detroit, MI
Paper i proceeding
2009
Investigation of the cooling and underbody flow field on a detailed model scale passenger car. Part 1 - Cooling flows and Reynolds number effects
Lasse Malmkjaer Christoffersen, Christoffer Landström, Lennart Löfdahl
FEDSM2009, ASME Fluids Engineering Division Summer Meeting, Vail, CO, AUG 02-06, 2009. Vol. 2, p. 297-304
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2009
An Investigation and Correction Method of Stationary Fan CFD MRF Simulations
Peter Gullberg, Lennart Löfdahl, Steven Adelman et al
SAE Technical Papers (2009-01-3067)
Artikel i vetenskaplig tidskrift
2009
An Investigation of the Aerodynamic Drag Mechanisms due to Ground Simulation in Yawed Flow Conditions for Heavy Trucks
David Söderblom, Per Elofsson, Linus Hjelm et al
Proceedings of FEDSM2009
Paper i proceeding
2009
Experimental Investigations of the Drag Reduction on a Generic Tractor-Trailer Configuration Using Active Flow Control in Combination with Solid Flaps
Christian Nayeri Navid, J Haff, David Greenblatt et al
Lecture Notes in Applied and Computational Mechanics, p. 179-191
Paper i proceeding
2009
INVESTIGATION OF THE COOLING AND UNDERBODY FLOW FIELD ON A DETAILED SCALE MODEL PASSENGER CAR - PART 2: EFFECT OF GROUND SIMULATION
Christoffer Landström, Lasse Malmkjaer Christoffersen, Lennart Löfdahl
Proceedings of the ASME 2009 Fluids Engineering Division Summer Meeting, p. 305-312
Paper i proceeding
2008
Moving Ground Effects on the Wheelhouse Flows of Heavy Vehicles
David Söderblom, Per Elofsson, Linus Hjelm et al
FISITA World Automotive Congress 2008 (F2008-12-232)
Paper i proceeding
2008
Initial Experimental Investigation of the Local Flow Field Around Rotating Wheels using an Omni-probe
Christoffer Landström, Tim Walker, Lennart Löfdahl
7th MIRA International Vehicle Aerodynamics Conference, 22-23 October, Warwickshire, UK
Artikel i vetenskaplig tidskrift
2008
Improving the Cooling Airflow of an Open Wheeled Race Car
Lasse Malmkjaer Christoffersen, David Söderblom, Lennart Löfdahl
Motorsports Engineering Conference & Exposition (SAE 2008-01-2995)
Paper i proceeding
2008
Drag Reduction of Long Haulage Trucks
David Söderblom, Lennart Löfdahl, Per Elofsson et al
The Vehicle Component (3-08), p. 27-28
Artikel i övriga tidskrifter
2008
Flow field investigation around a convertible passenger car using CFD and experiments
Christoffer Landström, Ture Jesper Marklund, Markus Christiansson et al
The Vehicle Component. Vol. 08 (2)
Artikel i övriga tidskrifter
2008
The L2 Wind Tunnel at Chalmers University of Technology
Christoffer Landström, Lennart Löfdahl
SATA Wind Tunnel Conference, June 7-10, Johannesburg, South Africa
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2008
Development of a Model Scale Heat Exchanger for Wind Tunnel Models of Road Vehicles
Lasse Malmkjaer Christoffersen, David Söderblom, Lennart Löfdahl
2008 World Congress; Detroit, MI; United States; 14 April 2008 through 17 April 2008, p. 9-
Paper i proceeding
2008
Influence of Moving Ground Conditions on the Cooling Flows of Road Vehicles
Lasse Malmkjaer Christoffersen, Roy Quartey-Papafio, Christoffer Landström et al
Collection of Technical Papers - AIAA Applied Aerodynamics Conference
Paper i proceeding
2008
The L2 Model Scale Wind Tunnel at Chalmers University of Technology
Christoffer Landström, Lennart Löfdahl
The Vehicle Component. Vol. 08 (10)
Artikel i övriga tidskrifter
2008
On investigation of sinusoidal and varicose instabilities of streaks in boundary layers
V.V. Kozlov, Valery Chernoray, Lennart Löfdahl
Proc. of XXII International Congress of Theoretical and Applied Mechanics, Adelaide, Australia, p. 1-2
Poster (konferens)
2008
Cooling Flow Optimization
Lasse Malmkjaer Christoffersen, Lennart Löfdahl
The Vehicle Component (1-08), p. 3-
Artikel i övriga tidskrifter
2008
3D fan modelling strategies for heavy duty vehicle cooling installations - CFD with experimental validation
Peter Gullberg, Lennart Löfdahl
32nd FISITA World Automotive Congress 2008; Munich; Germany; 14 September 2008 through 19 September 2008, p. 275-284
Paper i proceeding
2008
The Role of Aerodynamics in the 1955 Le Mans Crash
Peter Gullberg, Lennart Löfdahl
Motorsports Engineering Conference; Concord, NC; United States; 2 December 2008 through 4 December 2008
Paper i proceeding
2007
Control of Lambda-structure transformation into a turbulent spot by means of riblets
Yu.A. Litvinenko, Valery Chernoray, V.V. Kozlov et al
Proc. Int. Conf. on Methods of Aerophys. Research, Novosibirsk, Russia,, p. 152-156
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2007
Designing a course for future designers, Advantage – excellence in Engineering Simulation
Robert Nyiready, Lennart Löfdahl
Ansys News. Vol. 1 (1), p. 40-41
Artikel i övriga tidskrifter
2007
Numerical validations of secondary flows and loss development downstream of a highly loaded low pressure turbine outlet guide vane cascade
Johan Hjärne, Jonas Larsson, Valery Chernoray et al
Proc. of ASME TURBO EXPO 2007, Paper no GT2007-27712
Paper i proceeding
2007
Reynolds Effects in Cooling Airflow
Lasse Malmkjaer Christoffersen, Lennart Löfdahl
Proceedings of the 3rd EACC 2007 European Automotive CFD Conference, p. 12-
Paper i proceeding
2007
Aerodynamic Development and Evaluation of a Formula SAE Car Using Numerical Simulations
Peter Gullberg, Lasse Malmkjaer Christoffersen, Lennart Löfdahl
Proceedings of the 3rd EACC 2007 European Automotive CFD Conference, s. 359
Paper i proceeding
2007
Using CFD in the Design of a Model Scale Radiator
David Söderblom, Lasse Malmkjaer Christoffersen, Lennart Löfdahl
EACC 2007 European Automotive CFD Conference
Poster (konferens)
2006
Visualization of sinusoidal and varicose instabilities of streaks in a boundary layer
Valery Chernoray, V. V. Kozlov, Lennart Löfdahl
ERCOFTAC SIG 33 Workshop, Stockholm, p. 29-30
Paper i proceeding
2006
Hot wire visualization of turbulization of complex flows
Valery Chernoray, V.V. Kozlov, Lennart Löfdahl et al
Thermophysics and Aeromechanics. Vol. 13 (2), p. 1-9
Artikel i vetenskaplig tidskrift
2006
Performance and Off-Design Characteristics for Low Pressure Turbine Outlet Guide Vanes: Measurements and Calculations
Johan Hjärne, Jonas Larsson, Lennart Löfdahl
2006 ASME 51st Turbo Expo; Barcelona; Spain; 6 May 2006 through 11 May 2006. Vol. 6 Part A, p. 649-658
Paper i proceeding
2006
Visualization of sinusoidal and varicose instabilities of streaks in a boundary layer
Valery Chernoray, V.V. Kozlov, Lennart Löfdahl et al
Journal of Visualization. Vol. 9 (4)
Artikel i vetenskaplig tidskrift
2006
Breakdown of a streak via development of varicose secondary mode on the straight wing with pressure gradient
V.V. Kozlov, Valery Chernoray, Yu.A. Litvinenko et al
In Laminar-Turbulent Transition. Proc. of Sixth IUTAM Symposium, Bangalore, India 2004, p. 419-424
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2006
On nonlinear sinusoidal and varicose instabilities in a boundary layer and their control by riblets
V.V. Kozlov, Valery Chernoray, G.R. Grek et al
Proc. of the Wither Turbulence Prediction and Control Conf., Seoul, Korea, p. 1-2
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2006
Experiments on streamwise vortices in a swept wing boundary layer and their secondary instability
V.V. Kozlov, Valery Chernoray, A.V. Dovgal et al
In Laminar-Turbulent Transition. Proc. of Sixth IUTAM Symposium, Bangalore, India 2004, p. 415-418
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2006
Effect of riblets on nonlinear disturbances in the boundary layer
Valery Chernoray, V.V. Kozlov, Lennart Löfdahl et al
Thermophysics and Aeromechanics. Vol. 13 (1), p. 67-74
Artikel i vetenskaplig tidskrift
2006
An experimental investigation of secondary flows and loss development downstream of a highly loaded low pressure turbine outlet guide vane cascade
Johan Hjärne, Valery Chernoray, Jonas Larsson et al
Proc. of ASME TURBO EXPO, 2006, Barcelona, Spain
Paper i proceeding
2006
Features of laminar-turbulent transition of adverse pressure gradient flows at low and high Reynolds numbers
Valery Chernoray, V.V. Kozlov, Lennart Löfdahl et al
Proc. of the 6th Euromech Fluid Mechanics Conference, 2006, Stockholm, Sweden, p. 82-
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2006
WHEEL STRUT INTERFERENCE
Lasse Malmkjaer Christoffersen, Lennart Löfdahl
Proceedings of FEDSM2006, p. 5-
Paper i proceeding
2006
The influence of riblets on the development of a Λ structure and its transformation into a turbulent spot
Yu.A. Litvinenko, Valery Chernoray, V.V. Kozlov et al
Doklady Physics. Vol. 51 (3), p. 144-147
Artikel i vetenskaplig tidskrift
2005
Nonlinear sinusoidal and varicose instability in the boundary layer
V. V. Kozlov, Yu.A. Litvinenko, Valery Chernoray et al
Proc. of Euromech colloquium 468 Multi-scale modelling in the mechanics of solids.
Paper i proceeding
2005
Experimental analysis of the flow-field in a state-of-the-art linear cascade with boundary-layer suction
Johan Hjärne, Valery Chernoray, Jonas Larsson et al
Proc. of ASME TURBO EXPO 2005, Reno, Nevada, USA
Paper i proceeding
2005
Nonlinear sinusoidal and varicose instability in a boundary layer
Yu.A. Litvinenko, Valery Chernoray, V.V. Kozlov et al
Doklady Physics. Vol. 50 (3), p. 147-150
Artikel i vetenskaplig tidskrift
2005
Fluid mixing induced by vibrating walls
F. Carlsson, M. Sen, Lennart Löfdahl
European Journal of Mechanics, B/Fluids. Vol. 24 (3), p. 366-378
Artikel i vetenskaplig tidskrift
2005
Sensors and actuators for turbulent flows
Lennart Löfdahl, Mohamed Gad-el-Hak
MEMS: Applications, p. 6-1-6-77-
Kapitel i bok
2005
Experiments on secondary instability of streamwise vortices in a swept wing boundary layer
Valery Chernoray, A.V. Dovgal, V.V. Kozlov et al
Journal of Fluid Mechanics. Vol. 534, p. 295-325
Artikel i vetenskaplig tidskrift
2005
Hot wire visualizations of breakdown to turbulence in complex flows
Valery Chernoray, V.V. Kozlov, P.R. Pratt et al
Proc. of EUCASS conf., Moscow, Russia, p. 211-216
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2005
Adverse pressure gradient effect on nonlinear varicose instability of a streaky structure in an unswept wing boundary layer
Yu.A. Litvinenko, Valery Chernoray, V.V. Kozlov et al
Physics of Fluids. Vol. 17
Artikel i vetenskaplig tidskrift
2005
Fundamental Fluid Dynamics Relevant to Road Vehicle Aerodynamics (RVAD)
Lennart Löfdahl
von Karman Institute Lecture Series 2005-05
Kapitel i bok
2005
A study of the Blasius wall jet
O. Levin, Valery Chernoray, Lennart Löfdahl et al
Journal of Fluid Mechanics. Vol. 539, p. 313-347
Artikel i vetenskaplig tidskrift
2005
Review of visualization techniques in exploration of incompressible shear flows
V.V. Kozlov, Yu.A. Litvinenko, Valery Chernoray et al
Proc. of The 8th Asian symposium on visualization
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2005
A Brief History of Road Vehicle Aerodynamics (RVAD)
Lennart Löfdahl
von Karman Institute Lecture Series 2005-05
Kapitel i bok
2005
Riblet-assisted control of transformation of the Λ-structure into a turbulent spot
Valery Chernoray, Yu.A. Litvinenko, V.V. Kozlov et al
Thermophysics and Aeromechanics. Vol. 12 (4), p. 539-548
Artikel i vetenskaplig tidskrift
2005
Hybrid-mounted micromachined aluminum hotwires for wall shear stress measurements
Sjoerd Haasl, Dirk Mucha, Valery Chernoray et al
Journal of Microelectromechanical Systems. Vol. 14 (2), p. 254-260
Artikel i vetenskaplig tidskrift
2004
Secondary instability of stationary vortex packets in a swept wing boundary layer
Valery Chernoray, A.V. Dovgal, V.V. Kozlov et al
In Proc. of XXI International Congress of Theoretical and Applied Mechanics, Warsaw, Poland
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2004
Experimental investigation of a streaky structure varicose instability in a swept wing boundary layer
Yu.A. Litvinenko, G.R. Grek, V.V. Kozlov et al
Thermophysics and Aeromechanics. Vol. 11 (1), p. 13-22
Artikel i vetenskaplig tidskrift
2004
Nonlinear sinusoidal and varicose instability in the boundary layer (review)
Yu.A. Litvinenko, Valery Chernoray, V.V. Kozlov et al
Thermophysics and Aeromechanics. Vol. 11 (3), p. 329-354
Artikel i vetenskaplig tidskrift
2004
Breakdown of a streak via development of varicose secondary mode on the straight wing with pressure gradient
V.V. Kozlov, Valery Chernoray, Yu.A. Litvinenko et al
Adv. in Turbulence X, Proc. of the Tenth European Turbulence Conference, Trondheim, Norway
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2004
Breakdown of a streak via development of varicose secondary mode on the straight wing with pressure gradient
V.V. Kozlov, Valery Chernoray, Yu.A. Litvinenko et al
In Proc. Int. Conf. on Methods of Aerophys. Research, Novosibirsk, Russia. Vol. 2, p. 107-110
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2004
Steady streaming due to vibrating walls
Fredrik Carlsson, Mihir Sen, Lennart Löfdahl
Physics of Fluids. Vol. 16, p. 1822-
Artikel i vetenskaplig tidskrift
2004
Time-resolved wall shear stress measurements using MEMS
A.N. Gibson, Valery Chernoray, Lennart Löfdahl et al
In Proc. of XXI International Congress of Theoretical and Applied Mechanics, Warsaw, Poland
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2003
Characteristics of a hot wire microsensor for time-dependent wall shear stress measurements
Lennart Löfdahl, Valery Chernoray, S. Haasl et al
Experiments in Fluids. Vol. 35 (3), p. 240-251
Artikel i vetenskaplig tidskrift
2003
Heat transfer effects due to vibrating walls
Fredrik Carlsson, Mihir Sen, Lennart Löfdahl
4th European Conference on Thermal Sciences, 29 th-31st March, Birmingham
Paper i proceeding
2003
Design of a Modern Test-Facility for LPT/OGV flows
Johan Hjärne, Jonas Larsson, Lennart Löfdahl
ASME paper GT2003-38083
Paper i proceeding
2003
Control of spanwise flow instability of a swept wing by suction
Yu.A. Litvinenko, V.V. Kozlov, Valery Chernoray et al
Thermophysics and Aeromechanics. Vol. 10 (4), p. 541-548
Artikel i vetenskaplig tidskrift
2003
Control of cross-flow instability on a swept wing by suction
Yu.A. Litvinenko, V.V. Kozlov, Valery Chernoray et al
Proc. of The 5th EUROMECH Fluid Mechanics Conference, Toulouse, France
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2003
A visualization study of the longitudinal structures of a plane wall-jet
M.V. Litvinenko, Valery Chernoray, Lennart Löfdahl et al
Proc. of The 7th Asian symposium on visualization, Singapore
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2003
Measurement of the turbulence intensities in a flat plate boundary layer
G. Mitchell, Valery Chernoray, Lennart Löfdahl et al
Proc. of Turbulence, Heat and Mass Transfer, 4th Int. Symp., Antalya, Turkey, p. 261-268
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2003
Design of a modern test facility for LPT/OGV flows
Johan Hjärne, Lennart Löfdahl, Jonas Larsson
In Proc. Of ASME Turbo Expo 2003, Power for Land Sea and Air, Atalanta Georgia, June 16-19
Paper i proceeding
2003
A multi-sensor hot-wire anemometer system for investigation of wall-bounded flow structures
F.E. Jørgensen, Valery Chernoray, A.A. Bakchinov et al
Experimental Thermal and Fluid Science. Vol. 27 (2), p. 207-214
Artikel i vetenskaplig tidskrift
2003
A numerical and experimental study of the Blasius wall jet
O. Levin, M. Litvinenko, Valery Chernoray et al
Abstracts of 56th Ann. Meeting of the Div. of Fluid Dyn. APS, East Rutherford, New Jersey
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2003
A visualisation study of the longitudinal structures in the near filed of a plane wall-jet
Lennart Löfdahl, Valery Chernoray, V. V. Kozlov et al
Journal of Flow Vizualisation. Vol. 6 (2)
Artikel i vetenskaplig tidskrift
2003
Effect of streamwise vortices on the transition in the boundary layers and jets
V. V. Kozlov, G. R. Grek, Lennart Löfdahl et al
SIG Workshop on Swirling flows and vortex instabilities, Toulouse, France.
Paper i proceeding
2002
Sensors and Actuators for Turbulent Flows
Lennart Löfdahl, M. Gad-el-Hak
The MEMS Handbook, p. 25-1 - 25-21-
Kapitel i bok
2002
Hybrid mounted micromachined aluminium hot-wire for near-wall turbulence measurements
S. Haasl, D. Mucha, Valery Chernoray et al
15th IEEE International Conference on Micro Electro Mechanical Systems, Las Vegas, Nevada, USA, p. 336-339
Paper i proceeding
2002
An analytical asymptotic solution to a conjugate heat transfer problem
Carl Fredrik Stein, Peter Johansson, Jöran Bergh et al
International Journal of Heat and Mass Transfer. Vol. 45 (12), p. 2485-2500
Artikel i vetenskaplig tidskrift
2002
Design and Fabrication of MEMS velocity and Pressure Sensors
Lennart Löfdahl, M. Gad-el-Hak
von Karman Institute Lecture Series 2002-3
Kapitel i bok
2002
Role of the streaky structures in a transition mechanism of the boundary layers and jets
M.V. Litvinenko, Valery Chernoray, V.V. Kozlov et al
In Proc. Int. Conf. on Methods of Aerophys. Research, Novosibirsk, Russia, p. 133-138
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2002
Role of localized streamwise structures in the process of transition to turbulence in boundary layers and jets (review)
V.V. Kozlov, G.R. Grek, Lennart Löfdahl et al
Journal of Applied Mechanics and Technical Physics. Vol. 43 (2), p. 224-236
Artikel i vetenskaplig tidskrift
2002
MEMS Wall Shear Stress Sensors – Experiments, Theory and Modelling
Lennart Löfdahl, M. Gad-el-Hak
von Karman Institute Lecture Series
Kapitel i bok
2001
A quantitative flow visualization of a point source disturbance in a swept wing boundary layer
P. Pratt, Valery Chernoray, A.A. Bakchinov et al
Abstracts of Euromech colloquium 423, Stuttgart, Germany, p. 56-57
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2001
The role of streamwise structures in the near-field entrainment of plane jet
Valery Chernoray, Andrey Bakchinov, V.V. Kozlov et al
Euromech and Ercoftac colloquium 426, Bergen-Tromsø, Norway, p. 9-10
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2001
Experimental study of the K-regime of breakdown in straight and swept wing boundary layers
Valery Chernoray, A.A. Bakchinov, V.V. Kozlov et al
Physics of Fluids. Vol. 13 (7), p. 2129-2132
Artikel i vetenskaplig tidskrift
2001
Multiwire system for hot-wire measurements in boundary layers
A.A. Bakchinov, Valery Chernoray, F.E. Jørgensen et al
ASME 6th Int. Thermal Anemometry Symp., Melbourne, Australia, p. 1-10
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2001
Longitudinal structures in boundary layers and jets
V.V. Kozlov, Andrey Bakchinov, Lennart Löfdahl et al
In Proc. of the 8th Int. Conf. on Stability of Homogeneous and Heterogeneous Flows, Novosibirsk, Russia, p. 84-
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2000
Patterns of streamwise lambda structures mapped with Mini-CTA hot wire anemometry
Andrey Bakchinov, Valery Chernoray, V. V. Kozlov et al
Dantecs booklet
Artikel i övriga tidskrifter
2000
On K-type transition in swept wing boundary layer in the presence of an acoustic field
Andrey Bakchinov, Valery Chernoray, V. V. Kozlov et al
53rd Ann. Meeting of the Div. of Fluid Dyn., Washington, DC, Nov. 19-21, 2000.
Paper i proceeding
2000
Experimental study of the K-regime of breakdown in straight and swept wing boundary layers
A.A. Bakchinov, Valery Chernoray, V.V. Kozlov et al
Abstracts of 53rd Ann. Meeting of the Div. of Fluid Dyn. APS, Washington, DC
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2000
On the Calculation of Streamwise Derivatives from Single Point Measurements
Carl Fredrik Stein, Andrey Bakchinov, Jöran Bergh et al
8th European Turbulence Conference, Barcelona, June 27-30.
Paper i proceeding
2000
Experimental study of K-regime of breakdown in straight and swept wing boundary layers
Valery Chernoray, A.A. Bakchinov, V.V. Kozlov et al
In Proc. Int. Conf. on Methods of Aerophys. Research, Novosibirsk, Russia. Vol. 2, p. 65-70
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
2000
On the Thermal MEMS-Sensors for Wall-Shear Stress Measurements
Peter Johansson, Lennart Löfdahl, Andrey Bakchinov et al
8th European Turbulence Conference, Barcelona, June 27-30
Paper i proceeding
2000
On K-type transition in swept wing boundary layer in the presence of an acoustic field
Valery Chernoray, A.A. Bakchinov, V.V. Kozlov et al
In Proc. of the 7th Int. Conf. on Stability of Homogeneous and Heterogeneous Flows, Novosibirsk, Russia, p. 141-144
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
1999
MEMS Applications in Turbulence and Flow Control
Lennart Löfdahl, M. Gad-el-Hak
Progress in Aerospace Sciences. Vol. 35, p. 101-203
Artikel i vetenskaplig tidskrift
1999
MEMS based Pressure and Shear Stress Sensors for Turbulet Flows
Lennart Löfdahl, M. Gad-el-Hak
Measurements Science and Technology. Vol. 10, p. 665-686
Artikel i vetenskaplig tidskrift
1999
Pulsed Hot-Wire Measurements in Two- and Three-Dimensional Wall Jets
Hans Abrahamsson, Per-Åge Krogstad, Lennart Löfdahl et al
Experiments in Fluids. Vol. 27, p. 210-218
Artikel i vetenskaplig tidskrift
1999
A Similarity Theory for the Plane Wall Jet
William George, Hans Abrahamsson, J Eriksson et al
Journal of Fluid Mechanics. Vol. 425, p. 361-411
Artikel i vetenskaplig tidskrift
1999
The use of MEMS in Fluid Dynamics
Lennart Löfdahl
Svensk Mekanik inför 2000-talet, Jubileumsskrift vid Svenska Mekanikdagarna 7-9 juni 1999, redigerad av H. Alfredsson och G. Amberg, Kungliga Vetenskaps Akademien.
Kapitel i bok
1998
The Influence of Temperature on the Measurements of Reynolds Stresses in Shear Free Turbulence Near a Wall
Lennart Löfdahl, Bert Johansson, Christian Andersson
Experiments in Fluids. Vol. 25, p. 160-164
Artikel i vetenskaplig tidskrift
1997
A Shear-Free Turbulent Boundary Layer - Experiments and Modeling
Dag Aronson, Arne V Johansson, Lennart Löfdahl
Journal of Fluid Mechanics. Vol. 338, p. 363-385
Artikel i vetenskaplig tidskrift
1996
A Fast Simple Hot-Wire Method of Determining the Mean Velocity Vector of Complex Three-Dimensional Flows
Lennart Löfdahl, Bert Johansson, Camilla Ljus et al
Experiments in Fluids. Vol. 20, p. 398-400
Artikel i vetenskaplig tidskrift
1996
Silicon Pressure Transducers used to Determine the Longitudinal Correlation Coefficient in a Flat Plate Boundary Layer
Lennart Löfdahl, Edvard Kälvesten, Göran Stemme
Journal of Fluids Engineering. Vol. 118
Artikel i vetenskaplig tidskrift
1996
An investigation of the turbulence field in the three-dimensional wall jet
Hans Abrahamsson, Bert Johansson, Lennart Löfdahl
Advances in Turbulence VI (eds. Gavrilakis et al.), Kluwer, pp. 417-420.
Paper i proceeding
1996
An Integrated Silicon Based Pressure-Shear Stress Sensor for Turbulence Measurements
Lennart Löfdahl, Edvard Kälvesten, Therdoros Hadzianagnostakis et al
Advances in Turbulence VI (eds. Gavrilakis et al.), Kluwer, pp. 465-469.
Paper i proceeding
1996
Analytical Characterisation of Piezoresistive Square Diaphragm Silicon Microphone
Edvard Kälvesten, Lennart Löfdahl, Göran Stemme
Sensors and Materials. Vol. 8, p. 113-136
Artikel i vetenskaplig tidskrift
1996
A Similarity Theory for the Plane Wall Jet
William George, Hans Abrahamsson, Lennart Löfdahl
Third Internatinal Conferece on Engineering Turbulence Modelling and Measurements, 27-29 May, 1996, Crete, Greece
Paper i proceeding
1996
An Integrated Pressure-Velocity Sensor for Correlation Measurements in Turbulent Gas Flows
Edvard Kälvesten, Christian Vieider, Lennart Löfdahl et al
Sensors and Actuators A (52), p. 51-58
Artikel i vetenskaplig tidskrift
1995
An Integrated Pressure-Velocity Sensor for Correlation Measurements in Turbulent Gas Flows
Edvard Kälvesten, Christian Vieider, Lennart Löfdahl et al
Transducers´95- Eurosensors 9, Stockholm
Paper i proceeding
1995
A Small-Size Microphone for Turbulence Measurements
Edvard Kälvesten, Lennart Löfdahl, Göran Stemme
Sensors and Actuators A. Vol. 45, p. 103-108
Artikel i vetenskaplig tidskrift
1995
Measurements of Turbulent Quantities in Complex Three-Dimensional Boundary Layer Flow
Lennart Löfdahl, T.V. Truong, Julius Bruns
Experiments in Fluids. Vol. 17, p. 335-342
Artikel i vetenskaplig tidskrift
1995
Small Piezoresistive Silicon Microphones Specially Designed for the Characterization of Turbulent Gas Flows
Edvard Kälvesten, Lennart Löfdahl, Göran Stemme
Sensors and Actuators A. Vol. 46, p. 151-155
Artikel i vetenskaplig tidskrift
1994
Measurement of the Enstrophy and the Vorticity Vector in a Plane Cylinder Wake using a Spectral Method
Lennart Löfdahl, Bert Johansson, Jöran Bergh
Fifth European Turbulence Conference in Siena, Italy, July 5-8 1994.
Paper i proceeding
1994
Small Silicon Based Pressure Transducers for Measurements in Turbulent Boundary Layers
Lennart Löfdahl, Edvard Kälvesten, Göran Stemme
Experiments in Fluids. Vol. 17, p. 24-31
Artikel i vetenskaplig tidskrift
1994
An Integrated Silicon Based Pressure-Shear Stress Sensor for Measurements in Turbulence Flows
Lennart Löfdahl, Edvard Kälvesten, Therdoros Hadzianagnostakis et al
ASME Symposium on Application of Micro-Fabrication to Fluid Mechanics, 1994 Winter Annual Meeting, Atlanta, November 17-22.
Paper i proceeding
1994
On the Reynolds number dependence of a plane two-dimensional wall jet
Lennart Löfdahl, Hans Abrahamsson, Bert Johansson et al
Proceedings of the 2nd International Conference on Experimental Fluid Mechanics (eds. Onorato), Levotto & Bella, pp. 271-278.
Paper i proceeding
1994
Small Piezoresistive Silicon Microphones specially Designed for the Characterization of Turbulent Gas
Edvard Kälvesten, Lennart Löfdahl, Göran Stemme
Eurosensor 8, Toulouse, September 25-28
Paper i proceeding
1994
An Estimate of the Pressure Strain, Rate Tensor in a Plane Cylinder Wake
Dag Aronson, Lennart Löfdahl
Fifth European Turbulence Conference in Siena, Italy, July 5-8 1994
Paper i proceeding
1994
The Plane Wake of a Cylinder: An Estimate of the Pressure Strain Rate Tensor
Dag Aronson, Lennart Löfdahl
Physics of Fluids. Vol. 6, p. 2716-2721
Artikel i vetenskaplig tidskrift
1994
Silicon Pressure Transducers used to Determine the Longitudinal Correlation Coefficient in a Flat Plate Boundary Layer
Lennart Löfdahl, Edvard Kälvesten, Göran Stemme
ASME Symposium on Application of Micro-Fabrication to Fluid Mechanics, 1994 Winter Annual Meeting, Chicago, November 13-18.
Paper i proceeding
1994
A Turbulent Plane 2-Dimensional Wall-Jet in a Quiescent Surrounding
Hans Abrahamsson, Bert Johansson, Lennart Löfdahl
European Journal of Mechanics/B-Fluids. Vol. 13 (5), p. 533-556
Artikel i vetenskaplig tidskrift
1994
Using Small Silicon Pressure Transducers to Determine the Longitudinal Space-Time Correlation Coefficient of the Wall Pressure
Lennart Löfdahl, Edvard Kälvesten, Göran Stemme
Fifth European Turbulence Conference in Siena, Italy, July 5-8 1994
Paper i proceeding
1993
The Plane Wake of a Cylinder: Measurements and Inferences on Turbulence Modelling
Dag Aronson, Lennart Löfdahl
Physics of Fluids A. Vol. 5, p. 1433-1437
Artikel i vetenskaplig tidskrift
1993
A Silicon Transducer for the Determination of Wall-Pressure Fluctuations in Turbulent Boundary Layers
Lennart Löfdahl, Göran Stemme, Magnus Glavmo et al
Applied Scientific Research. Vol. 51
Artikel i vetenskaplig tidskrift
1993
Determination of Derivative Moments using Two Slanted Hot-Wires and a Spectral method
Lennart Löfdahl, Bert Johansson, Jöran Bergh et al
Experiments in Fluids. Vol. 15, p. 393-400
Artikel i vetenskaplig tidskrift
1993
Influence of Different Sensor Configurations on the Turbulent Quantities in a Complex Three-Dimensional Flow Field
Lennart Löfdahl, T.V Troung, Bert Johansson et al
ASME-Fluid Engineering Conference, Washington DC
Paper i proceeding
1993
Silicon Based Sensors for the Measurement of Turbulence and Wall-Pressure Fluctuations in a Two-Dimensional Flat Plate Boundary Layer
Lennart Löfdahl, Göran Stemme, Bert Johansson
International Conference on Near-wall Turbulent Flows, Tempe, Arizona
Paper i proceeding
1992
A Silicon Transducer for the Determination of Wall-Pressure Fluctuations in Turbulent Boundary Layers
Lennart Löfdahl, Göran Stemme, Magnus Glavmo et al
Fourth European Turbulence Conference, Delft, Elsevier, Amsterdam.
Paper i proceeding
1992
Measured and Modelled Component (11) of the Dissipation Rate Tensor
Dag Aronson, Lennart Löfdahl
13th Turbulence Conference in Missouri-Rolla, Missouri
Paper i proceeding
1992
Studies of the Turbulence Field in a Three-Dimensional Wall-Jet
Lennart Löfdahl, Bert Johansson
Fourth European Turbulence Conference, Delft, Elsevier, Amsterdam
Paper i proceeding
1992
Silicon Based Flow Sensors for Mean Velocity and Turbulence Measurements
Lennart Löfdahl, Göran Stemme, Bert Johansson
Experiments in Fluids. Vol. 12, p. 391-393
Artikel i vetenskaplig tidskrift
1992
Turbulence in a Two-Dimensional Wall-Jet - Experiments and Modeling,
Hans Abrahamsson, Helge Andersson, Bert Johansson et al
13th Turbulence Conference in Missouri-Rolla.
Paper i proceeding
1991
Reynolds Stress Measurements using Direction-Sensitive Double-Chip Silicon Sensors
Lennart Löfdahl, Göran Stemme, Bert Johansson
Measurements Science and Technology. Vol. 2, p. 369-373
Artikel i vetenskaplig tidskrift
1991
Turbulence in the Vicinity of a Rotating Cylinder in a Quiescent Fluid
Helge Andersson, Bert Johansson, Lennart Löfdahl et al
Eight Turbulence Shear Flow Conference, Munchen
Paper i proceeding
1991
Turbulence Measurements in a Two-Dimensional Wall-Jet
Hans Abrahamsson, Bert Johansson, Lennart Löfdahl
Eight Turbulent Shear Flow Conference, München
Paper i proceeding
1991
Flow Visualization and Turbulence Measurements in a Three-Dimensional Turbulence Wall Jet
Martin Eriksson, Bert Johansson, Lennart Löfdahl
First European Fluid Mechanics Conference in Cambridge September 16-20
Paper i proceeding
1990
Turbulence Measurements using Double-Chip Silicon Sensors
Lennart Löfdahl, Göran Stemme, Bert Johansson et al
Third European Turbulence Conference, Stockholm, Springer Verlag, Heidelberg,
Paper i proceeding
1989
Turbulence Measurements in a rotating frame of reference
Lennart Löfdahl
Hydroturbo 89, CSVTS Ostrava, Tjeckoslovakien.
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
1989
Turbulence measurements using sensors based on silicon technology
Lennart Löfdahl, Göran Stemme, Bert Johansson
ICIASF ’89, Deutsche Forschungsanstalt für Luft und Raumfahrt, Research Center Göttingen,W.-Germany, September 18-21, p. 95 - 103
Paper i proceeding
1989
Hot-Wire Measurements Inside a Centrifugal Fan Impeller
Anders Kjörk, Lennart Löfdahl
Journal of Fluids Engineering. Vol. 111, p. 363-368
Artikel i vetenskaplig tidskrift
1989
A Sensor Based on Silicon Technology for Turbulence Measurements
Lennart Löfdahl, Göran Stemme, Bert Johansson
Journal of Physics E. Scientific Instruments. Vol. 22, p. 391-393
Artikel i vetenskaplig tidskrift
1988
Traverse Mechanisms for the Determination of Reynolds Stresses using Hot-Wire Techniques
Lennart Löfdahl
Experiments in Fluids. Vol. 6, p. 352-354
Artikel i vetenskaplig tidskrift
1987
Flow measurements in a radial fan and other turbomachinery bladings using hot-wires, - Cascade flow calculations using PHENICS
Lennart Löfdahl
The first Scandinavian conference on viscous and Turbulent flow in Hydraulic Machinery, Trondheim, Norway, April 28-29, paper F.
Konferensbidrag (offentliggjort, men ej förlagsutgivet)
1987
Blade cooling in high temperature gas turbines – A review of film cooling and some fundamental results
Lennart Löfdahl, Erik Olsson
CIMAC ‘87, T – 16, Warsaw
Paper i proceeding
1986
Hot-Wire Techniques for the Determination of the Reynolds Stress Tensor in Three-Dimensional Flows
Lennart Löfdahl
Dantec Information. Vol. 3
Artikel i vetenskaplig tidskrift
1985
A comparison of Three Different Hot-Wire Techniques for the Detemination of the Reynolds Stress Tensor
Lennart Löfdahl, Erik Olsson
European Mechanics Colloquium 202 on “Measurement Techniques in Low-Speed Turburlent Flows"
Paper i proceeding
1984
Measurements Near the Stern of a Ship Model
Lennart Löfdahl, Lars Larsson
Journal of Ship Research. Vol. 28 (3), p. 186-201
Artikel i vetenskaplig tidskrift
1982
Measurements of Reynolds Stress Profiles in the Stern Region of a Ship Model
Lennart Löfdahl, Lars Larsson
IUTAM Symposium on Three-Dimensional Turbulent Boundary Layers
Paper i proceeding
1979
Uppmätning av turbulenta skjuvspänningar i tredimensionella gränsskikt med hjälp av varmtrådsanemometri - En sammanställning av olika mätmetoder. Intern skrift nr 78/46. Institutionen för tillämpad termodynamik och strömningslära, 1979.
Lennart Löfdahl, Lars Larsson
Rapport
1979
Using Single Rotated Hot Wires for Measuring Reynolds Stress in a Three-Dimensional Turbulent Boundary Layer with Considerable Upwash. SSPA Projektrapport nr 2360-3, 1979
Lennart Löfdahl, Lars Larsson
Rapport
1979
A Method for’Calculating Thick Three-Dimensional Turbulent Boundary Layers. Part I: Equations and General Principles. SSPA Project Report nr 2360-1, 1979.
Lars Larsson, Lennart Löfdahl
Rapport
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Visar 11 forskningsprojekt
2014–2018
Utveckling av Volvos fullskalevindtunnel och virtuell tunnelmodell för framtida fordonscertifiering
Lennart Löfdahl
Fordonsteknik och autonoma system
VINNOVA
2014–2016
Aerodynamik Komplett Fordon / Ny Fordonsarkitekturer
Lennart Löfdahl
Fordonsteknik och autonoma system
Energimyndigheten
2013–2017
Förbättrad prediktering av flödesseparation på vägfordon
Lennart Löfdahl
Fordonsteknik och autonoma system
Sabine Bonitz
Fordonsteknik och autonoma system
Energimyndigheten
2013–2014
Aerodynamik hos tunga fordon (KNEG)
Lennart Löfdahl
Fordonsteknik och autonoma system
Trafikverket
2013–2017
Sänkt luftmotstånd på fordon genom bättre design av hjul, fälg och optimering av kylluftflöden
Lennart Löfdahl
Fordonsteknik och autonoma system
Teddy Hobeika
Fordonsteknik och autonoma system
Energimyndigheten
2013–2017
Inkapsling av motorrum för aktiv temperaturkontroll och lägre ljudemissioner
Simone Sebben
Fordonsteknik och autonoma system
Lennart Löfdahl
Fordonsteknik och autonoma system
Energimyndigheten
2012–2013
Konceptstudie av motorcykeldesign för ökad säkerhet och förbättrad energieffektivitet
Lennart Löfdahl
Fordonsteknik och autonoma system
Trafikverket
2012–2014
Effektiva kylare
Lennart Löfdahl
Fordonsteknik och autonoma system
Statens Arbeidsmiljoinstitutt
2011–2014
Reduktion av personbilars luftmotstånd genom vakkontroll och optimering
Lennart Löfdahl
Fordonsteknik och autonoma system
Lennert Sterken
Fordonsteknik och autonoma system
Simone Sebben
Fordonsteknik och autonoma system
Energimyndigheten
2009–2013
Designoptimering av hjul och hjulhus på tunga fordon med avseende på bränsleförbrukning och kylluftflöde
Lennart Löfdahl
Fordonsteknik och autonoma system
Energimyndigheten
2009–2011
Strömningsmotstånd hos personbilar
Lennart Löfdahl
Fordonsteknik och autonoma system
Energimyndigheten
Det kan finnas fler projekt där Lennart Löfdahl medverkar, men du måste vara inloggad som anställd på Chalmers för att kunna se dem.