Tomas Grönstedt

Professor at Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

I'm a professor in turbomachinery at the fluid dynamics division of the applied mechanics department. My research interests revolve around turbomachinery conceptual design and aero engine conceptual design. As part of my Ph.D. I developed a gas turbine performance tool, GESTPAN (GEneral Stationary and Transient Propulsion ANalsysis). The full thesis is available at http://publications.lib.chalmers.se/records/fulltext/799.pdf. Since then, GESTPAN, associated software and research scope has been extended to include methods for cooling flow prediction, engine design (sizing/dimensions and weights), noise modeling, non-linear parameter estimation, exergy analysis, nacelle drag estimates and aircraft conceptual design (GISMO). Over the last years I have broadened my interest to conceptual design of fluid machinery (2D/3D methods), for which the prime focus has been intercooled aero engines and recently high speed propellers and compressor aerodynamics. My research aim is to contribute to the development of concepts that promise to radically increase aero engine and gas turbine efficiency.On-going teaching activities:MTF171 Gas Turbine TechnologyTME210 Turbomachinery PhD students and projects:Xin Zhao (LEMCOTEC/FP7, on-going) Oskar Thulin (EURO, E-BREAK/FP7) Egill Thorbergsson (TURBOPOWER) Alexandre Capitao Patrao (NFFP) Sebastian Samuelsson (NFFP, TOICA/FP7) Richard Avellan (NFFP, finished) Xu Lei (NEWAC/FP6, finished)Linda Larsson (NFFP, finished)

Source: chalmers.se

Projects

2013–2015

Power dense heat recuperation for aircraft engines

Tomas Grönstedt Fluid Dynamics
VINNOVA

2012–2014

Conceptual gas turbine modeling for oxy-fuel cycles. Turbokraft phase 2

Tomas Grönstedt Fluid Dynamics
Egill Maron Thorbergsson Fluid Dynamics
Swedish Energy Agency

2013–2017

Design for performance – advanced powerplant architecture and integration

Tomas Grönstedt Fluid Dynamics
Rikard Söderberg Product and Production Development
Visakha Raja Product Development
Ola Isaksson Product Development
Hans L Johannesson Product Development
VINNOVA

2013–2016

Thermal Overall Integrated Conception of Aircraft (TOICA)

Hans L Johannesson Product Development
Rikard Söderberg Product and Production Development
Ola Isaksson Product Development
Anders Forslund Product Development
Tomas Grönstedt Fluid Dynamics
Christoffer E Levandowski Product Development
Dag Raudberget Product Development
Jonas Landahl Product Development
Olivier Petit Fluid Dynamics
European Commission (FP7)

2015–2015

Experimental validation of heat exchanger concept for increased turbomachinery process efficiency, TurboPower

Tomas Grönstedt Fluid Dynamics
Xin Zhao Fluid Dynamics
Swedish Energy Agency

2011–2015

Low Emissions Core-Engine Technologies (LEMCOTEC)

Tomas Grönstedt Fluid Dynamics
Xin Zhao Fluid Dynamics
European Commission (FP7)

2012–2016

Engine Breakthrough Components and Subsystems (E-BREAK)

Tomas Grönstedt Fluid Dynamics
European Commission (FP7)

2013–2014

Motorer för Effektiv Framdrivning

Tomas Grönstedt Fluid Dynamics
VINNOVA

2013–2017

Innovativ Framdrivning och Motorinstallation

Tomas Grönstedt Fluid Dynamics
VINNOVA

2013–2017

Engine Module Validators (ENOVAL)

Tomas Grönstedt Fluid Dynamics
European Commission (FP7)

There might be more projects where Tomas Grönstedt participates, but you have to be logged in as a Chalmers employee to see them.

Publications

2016

Experimental Validation of the Aerodynamic Characteristics of an Aero-engine Intercooler

Xin Zhao, Mikhail Tokarev, Erwin Adi Hartono et al
Journal of Engineering For Gas Turbines and Power. Vol. 139 (5), p. 051201
Scientific journal article - peer reviewed
2016

An Optimization Platform for High Speed Propellers

Alexandre Capitao Patrao, Tomas Grönstedt, Richard Avellán et al
Swedish Aerospace Technology Congress 2016
Conference paper - non peer reviewed
2016

An outlook for radical aero engine intercooler concepts

Olivier Petit, Carlos Xisto, Xin Zhao et al
Proceedings of ASME Turbo Expo 2016: Turbine Technical Conference and Exposition, Seoul, South Korea, Jun 13-17, 2016. Vol. 3
Conference paper - peer reviewed
2016

Wake and Loss Analysis for a Double Bladed Swept Propeller

Alexandre Capitao Patrao, Richard Avellán, Anders Lundbladh et al
Proceedings of ASME Turbo Expo 2016: Turbine Technical Conference and Exposition, Seoul, South Korea, Jun 13-17, 2016. Vol. 1
Conference paper - peer reviewed
2016

Optimization of Robust Transonic Compressor Blades

Marcus Lejon, Niklas Andersson, Tomas Grönstedt et al
ASME Turbo Expo 2016: Turbine Technical Conference and Exposition. Vol. 2C
Conference paper - peer reviewed
2016

A Noise Assessment framework for Subsonic Aircraft and Engines

fakre ali, Lars Ellbrant, David Elmdahl et al
ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition, GT 2016; Seoul; South Korea. Vol. vol 1
Conference paper - peer reviewed
2016

Ultra low emission technology innovations for mid-century aircraft turbine engines

Tomas Grönstedt, Carlos Xisto, Vishal Sethi et al
ASME Turbo EXPO 2016, Seoul, June 13-17, South Korea. Vol. 3 (GT2016-56123)
Conference paper - peer reviewed
2015

A Thermodynamic Analysis of Two Competing Mid-Sized Oxy-Fuel Combustion Combined Cycles

Egill Thorbergsson, Tomas Grönstedt,
Journal of Energy
Scientific journal article - peer reviewed
2015

Preparing for Proof-of-concept of a Novel Propeller for Open Rotor Engines

Richard Avellán, Alexandre Capitao Patrao, Anders Lundbladh et al
ISABE-2015-20097
Conference paper - peer reviewed
2015

High Power Density Work Extraction from Turbofan Exhaust Heat

Anders Lundbladh, Tomas Grönstedt, Magnus Genrup et al
ISABE-2015-20101
Conference paper - peer reviewed
2015

A Mission Assessment of Aero Engine Losses

Oskar Thulin, Tomas Grönstedt, Jean-Michel Rogero et al
ISABE-2015-20121
Conference paper - peer reviewed
2015

Exploring Influence of Static Engine Component Design Variables on System Level Performance

Visakha Raja, Sebastian Samuelsson, Ola Isaksson et al
22nd International Symposium on Air Breathing Engines, ISABE2015
Conference paper - non peer reviewed
2015

Aero Engine Intercooling Optimization Using a Variable Flow Path

Xin Zhao, Tomas Grönstedt,
The 22nd international symposium of air breathing engines, Phoenix, U.S. 2015
Conference paper - peer reviewed
2015

Consistent Conceptual Design and Performance Modeling of Aero Engines

Sebastian Samuelsson, Konstantinos Kyprianidis, Tomas Grönstedt et al
ASME Turbo Expo 2015: Turbine Technical Conference and Exposition, GT 2015; Montreal; Canada; 15 June 2015 through 19 June 2015 (GT2015-43331)
Conference paper - peer reviewed
2015

First and second law analysis of intercooled turbofan engine

Xin Zhao, Oskar Thulin, Tomas Grönstedt et al
Journal of Engineering For Gas Turbines and Power
Scientific journal article - peer reviewed
2015

First and second law analysis of intercooled turbofan engine

Xin Zhao, Oskar Thulin, Tomas Grönstedt et al
ASME Turbo Expo 2015, Montreal Canada, GT2015-43187
Conference paper - peer reviewed
2014

A Conceptual Design Study of an Open Rotor Powered Regional Aircraft

Linda Larsson, Anders Lundbladh, Tomas Grönstedt et al
ASME Turbo Expo: Turbine Technical Conference and Exposition, Dusseldorf, GERMANY. JUN 16-20, 2014, p. V01AT01A023
Conference paper - peer reviewed
2014

Concept description and assessment of the main features of a geared intercooled reversed flow core engine

William Camilleri, Eduardo Anselmi, Vishal Sethi et al
Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering. Vol. 229 (9), p. 1631-1639
Scientific journal article - peer reviewed
2014

Conceptual design of a two-pass cross-flow aeroengine intercooler

Xin Zhao, Tomas Grönstedt,
Proceedings of the Institution of Mechanical Engineers. Part G, Journal of Aerospace Engineering
Scientific journal article - peer reviewed
2014

First and Second Law Analysis of Future Aircraft Engines

Tomas Grönstedt, Mohammad Irannezhad, Lei Xu et al
Journal of Engineering For Gas Turbines and Power. Vol. 136 (3)
Scientific journal article - peer reviewed
2014

Multidisciplinary Analysis of a Geared Fan Intercooled Core Aero-Engine

Konstantinos Kyprianidis, Andrew, M. Rolt, Tomas Grönstedt et al
Journal of Engineering For Gas Turbines and Power. Vol. 136 (1)
Scientific journal article - peer reviewed
2013

The Effect of Engine Dimensions on Supersonic Aircraft Performance

Alvaro Abdalla, Henrique Gazetta, Tomas Grönstedt et al
4:th CEAS Air & Space Conference
Conference paper - peer reviewed
2013

Transforming Propulsion Installation for Commercial Aircraft

Anders Lundbladh, Linda Larsson, Tomas Grönstedt et al
ISABE-2013-1434
Conference paper - peer reviewed
2013

Multidisciplinary Analysis of a Geared Fan Intercooled Core Aero-Engine

Konstantinos Kyprianidis, Andrew, M. Rolt, Tomas Grönstedt et al
Proceedings of the ASME Turbo Expo 2013. Vol. 2, p. Art. no. GT2013-95474
Conference paper - peer reviewed
2013

Lessons Learned From the Development of Courses on Gas Turbine Multidisciplinary Conceptual Design

Konstantinos Kyprianidis, Tomas Grönstedt, J. R. Barbosa et al
Journal of Engineering for Gas Turbines and Power-Transactions of the Asme. Vol. 135 (7)
Scientific journal article - peer reviewed
2013

Assessment of the performance potential for a two-pass cross flow intercooler for aero engine applications

Xin Zhao, Tomas Grönstedt, Konstantinos Kyprianidis et al
International Society for Airbreathing Engines, ISABE, Busan, South Korea, 2013, ( ISABE-2013-1215 )
Conference paper - peer reviewed
2013

EFFECTS OF DIFFERENT PROPELLER MODELS ON OPEN ROTOR FUEL CONSUMPTION

Linda Larsson, Anders Lundbladh, Tomas Grönstedt et al
International Society for Airbreathing Engines, ISABE, Busan, South Korea, 2013 (ISABE-2013-1712)
Conference paper - non peer reviewed
2013

Conceptual Mean-Line Design of Single and Twin-Shaft Oxy-Fuel Gas Turbine in a Semiclosed Oxy-Fuel Combustion Combined Cycle

Majed Sammak, Egill Thorbergsson, Tomas Grönstedt et al
Journal of Engineering For Gas Turbines and Power. Vol. 135 (8)
Scientific journal article - peer reviewed
2013

An assessment of cooled air cooling for combined cycle gas turbines

Christoffer Järpner, Amirreza Movaghar, Egill Thorbergsson et al
5th International Conference on Applied Energy
Conference paper - peer reviewed
2013

Optimization Study of an Intercooled Recuperated Aero-Engine

Lei Xu, Konstantinos Kyprianidis, Tomas Grönstedt et al
Journal of Propulsion and Power. Vol. 29 (2), p. 424-432
Scientific journal article - peer reviewed
2013

Integration of Fluid Thermodynamic and Transport Properties in Conceptual Turbomachinery Design

Egill Thorbergsson, Tomas Grönstedt, Chris Robinson et al
Proceedings of ASME Turbo Expo 2013: Power for Land, Sea and Air. June 3-7, 2013, San Antonio, USA. Vol. 6 B, p. (art. no.) GT2013-95833
Conference paper - peer reviewed
2013

First and Second Law Analysis of Future Aircraft Engines

Tomas Grönstedt, Oskar Thulin, Anders Lundbladh et al
ASME Turbo Expo, 2013. Vol. 2 (GT2013-95516)
Conference paper - peer reviewed
2012

Lessons learned from the development of courses on gas turbine multi-disciplinary conceptual design

Konstantinos Kyprianidis, Tomas Grönstedt, J.R. Barbosa et al
Proceedings of the ASME Turbo Expo. Vol. 3, p. 513-523
Conference paper - peer reviewed
2012

Propulsion Systems Modeling

Tomas Grönstedt,
Physics-Based Modeling & Simulation for Aerospace Systems, VKI lecture series
Chapter in monograph, book
2012

An environmental assessment of air traffic speed constraints in the departure phase of flight: A case study at Gothenburg Landvetter Airport, Sweden

Deborah Mitchell, Henrik Ekstrand, Tomas Grönstedt et al
Transportation Research Part D. Vol. 17 (8), p. 610-618
Scientific journal article - peer reviewed
2012

Conceptual Mean-line Design of Single and Twin-shaft Oxy-fuel Gas turbine in a Semi-closed Oxy-fuel Combustion Combined Cycle

Majed Sammak, Magnus Genrup, Egill Thorbergsson et al
Proceedings of ASME Turbo Expo 2012: Power for Land, Sea and Air. June 11-15, 2012, Copenhagen, Denmark. Vol. 3, p. 289-297
Conference paper - peer reviewed
2012

A Comparative Analysis of Two Competing Mid-size Oxy-fuel Combustion Cycles

Egill Thorbergsson, Tomas Grönstedt, Majed Sammak et al
Proceedings of ASME Turbo Expo 2012: Power for Land, Sea and Air. June 11-15, 2012, Copenhagen, Denmark
Conference paper - peer reviewed
2011

Conceptual Design Of A Mid-Sized Semi-Closed Oxy-Fuel Combustion Combined Cycle

Majed Sammak, Magnus Genrup, Egill Thorbergsson et al
Proceedings of the ASME Turbo Expo 2011: Power for Land, Sea and Air, 2011, Vancouver, Canada. Vol. 4, p. 253-261
Conference paper - peer reviewed
2011

Multicriteria Optimization Of Conceptual Compressor Aerodynamic Design

Egill Thorbergsson, Tomas Grönstedt,
International Society of Airbreathing Engines (ISABE), 2011, Gothenburg
Conference paper - non peer reviewed
2011

LIMITATIONS ON TUBE FILLING IN A PULSED DETONATION ENGINE

Mohammad Irannezhad, Lars-Erik Eriksson, Tomas Grönstedt et al
20th ISABE Conference Proceedings
Conference paper - non peer reviewed
2011

Mission optimization of the geared turbofan engine

Linda Larsson, Richard Avellán, Tomas Grönstedt et al
International Society for Airbreathing Engines, ISABE, Gothenburg, 2011, (ISABE-2011-1314)
Conference paper - non peer reviewed
2011

Optimization Study of an Intercooled Recuperated Aero-Engine

Lei Xu, Konstantinos Kyprianidis, Tomas Grönstedt et al
Preprint
2011

Model-based on-board turbofan thrust estimation

M. Henriksson, Tomas Grönstedt, Claes Breitholtz et al
Control Engineering Practice. Vol. 19 (6), p. 602-610
Scientific journal article - peer reviewed
2011

Analysis of an Intercooled Recuperated Aero-engine

Lei Xu, Konstantinos Kyprianidis, Tomas Grönstedt et al
ISABE 2011 Proceedings, ISABE-2011-1318
Conference paper - peer reviewed
2011

Conceptual Design and Mission Analysis for a Geared Turbofan and an Open Rotor Configuration

Linda Larsson, Tomas Grönstedt, Konstantinos Kyprianidis et al
Proceedings of ASME TURBO EXPO 2011. Vancouver, 6-10 June 2011. Vol. 1, p. 359-370
Conference paper - peer reviewed
2011

Assessment of Future Aero-engine Designs with Intercooled and Intercooled Recuperated Cores

Konstantinos Kyprianidis, Tomas Grönstedt, Stephen O.T. Ogaji et al
ASME Journal of Engineering for Gas Turbines and Power. Vol. 133 (1)
Scientific journal article - peer reviewed
2010

Optimizing the Operation of the Intercooled Turbofan Engine

Tomas Grönstedt, Konstantinos Kyprianidis,
ASME TURBO EXPO 2010 Proceedings, GT2010-22519
Conference paper - peer reviewed
2010

Assessment of Future Aero Engine Designs with Intercooled and Intercooled Recuperated Cores

Konstantinos Kyprianidis, Tomas Grönstedt, Stephen O.T. Ogaji et al
ASME TURBO EXPO 2010 Proceedings, ASME-GT-2010-22519
Conference paper - peer reviewed
2010

Design and Analysis of an Intercooled Turbofan Engine

Lei Xu, Tomas Grönstedt,
Journal of Engineering for Gas Turbines and Power . Vol. 132 (11)
Scientific journal article - peer reviewed
2009

Development, accomplishment and evaluation of a project course in applied mechanics---Lessons learnt

Mats Ander, Tomas Grönstedt, Thomas Abrahamsson et al
Svenska mekanikdagarna, Södertälje 2009, 15-17-juni, Session 7:4-Utbildning, sid 99 (1 page abstract), p. 99
Conference paper - non peer reviewed
2009

Low Pressure System Component Advancements and its Impact on Future Turbofan Engine Emissions

Konstantinos Kyprianidis, Dax Au, Stephen Ogaji et al
XIX International Symposium on Air Breathing Engines (ISABE) (ISABE-2009-1276)
Conference paper - peer reviewed
2009

Future Innovative Cores for Commercial Engines

Anders Lundbladh, Stefan Donnerhack, Helmut Streifinger et al
XIX International Symposium on Air Breathing Engines (ISABE) (ISABE-2009-1277)
Conference paper - peer reviewed
2009

Low Pressure System Component Advancements and Its Influence on Future Turbofan Engine Emissions

Tomas Grönstedt, Dax Au, Konstantinos Kyprianidis et al
Proceedings of ASME Turbo Expo 2009: Power for Land, Sea and Air, GT2009 (GT2009-60201)
Conference paper - peer reviewed
2009

EFFECTS OF A CONTROLLED PHASE-SHIFT ON THE OUTLET CONDITIONS OF A SET OF PULSE DETONATORS

Fabrice Giuliani, Andreas Lang, Mohammad Irannezhad et al
PROCEEDINGS XIX International Symposium on Air Breathing Engines (ISABE-2009-1315)
Conference paper - peer reviewed
2009

Derated Climb Trajectories for Subsonic Transport Aircraft

Henrik Ekstrand, Richard Avellán, Tomas Grönstedt et al
PROCEEDINGS XIX INTERNATIONAL SYMPOSIUM ON AIR BREATHING ENGINES (ISABE-2009-1340)
Conference paper - peer reviewed
2009

A Contra-rotating Variable Cycle Turbofan Engine

Lei Xu, Tomas Grönstedt,
ISABE-2009-1161
Conference paper - peer reviewed
2009

AN ASSESSMENT OF A TURBOFAN ENGINE USING CATALYTIC INTERTURBINE COMBUSTION

Richard Avellán, Tomas Grönstedt,
ASME Turbo Expo 2009 (GT2009-59950)
Conference paper - peer reviewed
2007

Mission Optimization of an Intercooled Turbofan Engine

Lei Xu, Bernhard Gustafsson, Tomas Grönstedt et al
ISABE-2007-1157
Conference paper - non peer reviewed
2007

Catalytic Burner Device

Tomas Grönstedt, Richard Avellán,
Patent application
2005

Reduced order Thrust Estimation for a Jet Engine

Mattias Henriksson, Tomas Grönstedt,
50th ASME Turbo Expo, pp
Conference paper - peer reviewed
2005

Least Squares Based Transient Nonlinear Gas Path Analysis

Tomas Grönstedt,
50th ASME Turbo Expo
Conference paper - peer reviewed
2005

DISTRIBUTED PROPULSION AND TURBOFAN SCALE EFFECTS

Anders Lundbladh, Tomas Grönstedt,
ISABE 2005, 17th Symposium on Airbreathing Engine
Conference paper - peer reviewed
2004

A Numerically Efficient Method for Transient Gas Turbine Performance Estimation

Tomas Grönstedt, Yongsheng Zhao,
40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Fort Lauderdale, Florida 11 - 14 July
Conference paper - peer reviewed
2004

Engine Variability Impact on Reduced Order Thrust Estimation Filters

Mattias Henriksson, Tomas Grönstedt,
40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Fort Lauderdale, Florida 11 - 14 July
Conference paper - peer reviewed
2004

A Comparative Study of Genetical Algorithms and Gradient Methods for RM12 Engine Diagnostics and Performance Estimation

Tomas Grönstedt, Markus Wallin,
ASME Turbo Expo, Vienna
Conference paper - peer reviewed
2004

An Augmented Multi-Point Estimation Technique for Gas Path Analysis Model Generation

Patrik Skölde, Markus Wallin, Tomas Grönstedt et al
ASME Turbo Expo: Land, Sea & Air 14-17 June, Vienna.
Conference paper - peer reviewed
2004

Effects of Engine Intake and Nozzle Design the Performance of a Low-Signature Reconnaissance UAV

Markus Wallin, Ulf Håll, Tomas Grönstedt et al
40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, Fort Lauderdale, Florida
Conference paper - peer reviewed
2003

A Study of Engine Configurations for a Low-Signature Reconnaissance UAV

Markus Wallin, Tomas Grönstedt, Ulf Håll et al
XVI International Symposium on Air Breathing Engines, Cleveland
Conference paper - peer reviewed
2003

A Mission Based Optimisation Study of Engine Configurations For a Low-Signature Reconnaissance UAV - A Multi-Objective Approach

Markus Wallin, Tomas Grönstedt, Ulf Håll et al
2nd AIAA “Unmanned Unlimited” Systems, Technologies, and Operations, San Diego
Scientific journal article - peer reviewed
2002

Identifiability in multi-point gas turbine parameter estimation problems

Tomas Grönstedt,
ASME Turbo Expo: Land, Sea & Air 3-6, Amsterdam.
Conference paper - peer reviewed
2002

Control Optimization of the Transient Performance of the Selective Bleed Variable Cycle Engine During Mode Transition

Tomas Grönstedt, Pericles Pilidis,
Journal of Engineering for Gas Turbines and Power. Vol. 124 (75), p. 75-81
Scientific journal article - peer reviewed
2002

Estimating Parameters in Physical Models using MathModelica

Jonas Sjöberg, Fredrik Fyhr, Tomas Grönstedt et al
Proceedings of the 2ndInternational Modelica Conference, Deutsche Zentrum für Luft- und Raumfahrt e.V., Oberpfaffenhofen, Germany, pp. 325-330
Conference paper - non peer reviewed
2001

A Multi-point Gas Path Analysis Tool for Gas Turbine Engines with a Moderate Level of Instrumentation

Tomas Grönstedt,
15th International Symposium on Air Breathing Engines, Sept. 3-7, Bangalore, India.
Conference paper - peer reviewed
2000

Control Optimization of the Transient Performance of the Selective Bleed Variable Cycle Engine During Mode Transition

Tomas Grönstedt, Pericles Pilidis,
ASME Turbo Expo: Land, Sea & Air 8-11 May, Munich.
Conference paper - peer reviewed
1999

Advanced Solvers for General High Performance Transient Gas Turbine Simulation Tools

Tomas Grönstedt,
14th International Symposium on Air Breathing Engines, Sept. 5-12, Florence, Italy.
Conference paper - peer reviewed
1997

On advanced jet engine concepts

Tomas Grönstedt,
Licentiate thesis
1997

Mission Dependent Optimization of Advanced Fighter Engines

Tomas Grönstedt, Ulf Håll,
13th International Symposium on Air Breathing Engines, Sept. 7-12, 1997, Chattanooga, Tennessee, U.S.A.
Conference paper - peer reviewed
1996

The Optimization of a Seven Stage Compressor

Tomas Grönstedt, Thomas Johansson, Ulf Håll et al
International Symposium on Fluid Machinery and Fluid Engineering, Sept. 9-12, 1996, Beijing, China
Conference paper - peer reviewed