Håkan Nilsson

Professor at Department of Applied Mechanics, Fluid Dynamics

My main area of research is in the hydro turbine area, where I have 2-3 PhD students that are financed by the Swedish Hydro Power Center (www.svc.nu). We focus on the water flow and cavitation in the pressure conduits, spiral casings, distributor, runner and draft tube, and the cooling air flow in electric generators. We develop and validate numerical methods and models (e.g. rotor-stator methods and turbulence modeling), and distribute tutorials and best-practice guidelines. We are also performing experimental measurements.I am also active in PhD projects and Master projects in other areas, such as:* Fibers in air flow* Simulation of flow in flow meters* Flow and heat transfer in TIG-welding* Flow in the human aorta (experimentally and numerically)* Natural convection at free surfaces with surfactants.* Flow in a centrifugal pump* Flow in the swirl generators in Timisoara and Stuttgart* Flow in blood vessels during whiplash motion* CAD and mesh-generation from CT-scanI supervise a large number of small projects in project courses.All numerical work is done with the OpenSource OpenFOAM tool, and I am active in the OpenFOAM community mainly through the Turbomachinery Working Group and in the Workshop Committee.

Source: chalmers.se

Projects

2016–2018

Drakens väg - Optimering av strömkraftverk i havet

Håkan Nilsson Department of Applied Mechanics, Fluid Dynamics
Swedish Energy Agency

2012–2017

Experimental and numerical investigations of cooling air flow in hydro power electric generators

Håkan Nilsson Department of Applied Mechanics, Fluid Dynamics
Valery Chernoray Department of Applied Mechanics, Fluid Dynamics
Hamed Jamshidi Department of Applied Mechanics, Fluid Dynamics
Elforsk

2013–2014

1D system transients coupled with 3D local flow details

Håkan Nilsson Department of Applied Mechanics, Fluid Dynamics
Olivier Petit Department of Applied Mechanics, Fluid Dynamics
Elforsk

2012–2016

Unsteady incompressible flow in rotating machinery

Håkan Nilsson Department of Applied Mechanics, Fluid Dynamics
Ardalan Javadi Department of Applied Mechanics, Fluid Dynamics
Elforsk

2012–2013

Värmeöverföringsmätningar i skalmodell av elgenerator

Håkan Nilsson Department of Applied Mechanics, Fluid Dynamics
Valery Chernoray Department of Applied Mechanics, Fluid Dynamics
ÅForsk (Ångpanneföreningens Foundation for Research and Development)

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

Publications

2017

Detailed numerical investigation of a Kaplan turbine with rotor-stator interaction using turbulence-resolving simulations

Ardalan Javadi, Håkan Nilsson,
International Journal of Heat and Fluid Flow. Vol. 63, p. 1-13
Scientific journal article - peer reviewed
2017

Active flow control of the vortex rope and pressure pulsations in a swirl generator

Ardalan Javadi, Håkan Nilsson,
Engineering Applications of Computational Fluid Mechanics. Vol. 11 (1), p. 30-41
Scientific journal article - peer reviewed
2017

1D-3D coupling for hydraulic system transient simulations

Chao Wang, Håkan Nilsson, Jiandong Yang et al
Computer Physics Communications. Vol. 210, p. 1-9
Scientific journal article - peer reviewed
2016

A predictive model for gas tungsten arc heat source

Isabelle Choquet, Alireza Javidi Shirvan, Håkan Nilsson et al
The 7th International Swedish Production Symposium, SPS16, Conference Proceedings: 25th – 27th of October 2016, Lund: Swedish Production Academy
Conference paper - peer reviewed
2016

Numerical simulation of conjugate heat transfer and surface radiative heat transfer using the P 1 thermal radiation model: Parametric study in benchmark cases.

Carlo Cintolesi, Håkan Nilsson, Andrea Petronio et al
International Journal of Heat and Mass Transfer. Vol. 107, p. 956-971
Scientific journal article - peer reviewed
2016

Effect of cathode model on arc attachment for short high-intensity arc on a refractory cathode

Alireza Javidi Shirvan, Isabelle Choquet, Håkan Nilsson et al
Journal of Physics D: Applied Physics. Vol. 49
Scientific journal article - peer reviewed
2016

Air bubbles are released by thoracic endograft deployment: An in vitro experimental study

Kamuran Inci, Giasemi Koutouzi, Valery Chernoray et al
SAGE Open Medicine. Vol. 4, p. 1-5
Scientific journal article - peer reviewed
2016

VENTILATION AIR FLOW FIELD CHARACTERISTICS IN A HYDRO GENERATOR Model

Hamed Jamshidi, Håkan Nilsson, Valery Chernoray et al
The 19th International Seminar on Hydropower Plants
Conference paper - peer reviewed
2016

A physically based model for thermal plasma arc attachment on a W-ThO2 cathode

Isabelle Choquet, Alireza Javidi Shirvan, Håkan Nilsson et al
2016 IEEE International Conference on Plasma Science (ICOPS)
Conference paper - peer reviewed
2016

Surface shear stress dependence of gas transfer velocity parameterizations using DNS

Sam Fredriksson, Lars Arneborg, Håkan Nilsson et al
Journal of Geophysical Research: Oceans. Vol. 121 (10), p. 7369-7389
Scientific journal article - peer reviewed
2016

Displacement Forces in Stent Grafts: Influence of Diameter Variation and Curvature Asymmetry

Håkan Roos, Mikhail Tokarev, Valery Chernoray et al
European Journal of Vascular and Endovascular Surgery. Vol. 52 (2), p. 150-156
Scientific journal article - peer reviewed
2016

Particle-level simulations of flocculation in a fiber suspension flowing through a diffuser

Jelena Andric, Stefan B. Lindström, Srdjan Sasic et al
Thermal Science
Scientific journal article - peer reviewed
2016

Near-surface physics during convection affecting air-water gas transfer

Sam Fredriksson, Lars Arneborg, Håkan Nilsson et al
IOP Conference Series: Earth and Environmental Science. Vol. 35 (1), p. 012007
Conference paper - peer reviewed
2016

Ballistic deflection of fibres in decelerating flow

Jelena Andric, Stefan B. Lindström, Srdjan Sasic et al
International Journal of Multiphase Flow. Vol. 85, p. 57-66
Scientific journal article - peer reviewed
2016

Swirling flow in a conical diffuser generated with rotor-stator interaction

Ardalan Javadi, Alin Bosioc, Håkan Nilsson et al
Other
2016

Experimental and numerical investigation of the precessing helical vortex in a conical diffuser, with rotor-stator interaction

Ardalan Javadi, Håkan Nilsson, Alin Bosioc et al
Journal of Fluids Engineering - Trancactions of The ASME. Vol. 138 (8), p. Art. no. 081106
Scientific journal article - peer reviewed
2016

Transient pressure changes in the vertebral canal during whiplash motion – A hydrodynamic modeling approach

Huadong Yao, Mats Y. Svensson, Håkan Nilsson et al
Journal of Biomechanics. Vol. 49 (3), p. 416–422
Scientific journal article - peer reviewed
2016

An evaluation of gas transfer velocity parameterizations during natural convection using DNS

Sam Fredriksson, Lars Arneborg, Håkan Nilsson et al
Journal of Geophysical Research - Oceans. Vol. 121 (2), p. 1400-1423
Scientific journal article - peer reviewed
2015

Numerical Modelling of Blood Pressure Pulses in Vertebral Canal during Whiplash Motion

Huadong Yao, Mats Y. Svensson, Håkan Nilsson et al
4th SAFER Crash Reference Group Meeting
Conference paper - non peer reviewed
2015

Numerical and experimental investigations of a hydraulic pipe during a gate closure at a high Reynolds number

Olivier Petit, Wang Chao, Michel Cervantes et al
6 th IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems
Conference paper - peer reviewed
2015

Exploration of rotation/curvature correction method in hydropower application

Ardalan Javadi, Erik Krane, Håkan Nilsson et al
Turbulence, Heat and Mass Transfer 8
Conference paper - peer reviewed
2015

Active Flow Control of Vortex Rope in a Conical Diffuser

Ardalan Javadi, Håkan Nilsson,
IAHR WG Meeting on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Ljubljana 2015
Conference paper - peer reviewed
2015

Simulation of Water Level Fluctuations in a Hydraulic System Using a Coupled Liquid-Gas Model

Chao Wang, Jiandong Yang, Håkan Nilsson et al
Water. Vol. 2015 (7), p. 4446-4476
Scientific journal article - peer reviewed
2015

Large Eddy Simulation and Laser Doppler Velocimetry on a vortex flow meter model

Olle Penttinen, Håkan Nilsson,
Proceedings from International Symposium of Fluid Flow Measurements. Vol. 2015
Conference paper - non peer reviewed
2015

DIC for Surface Motion Analysis Applied to Displacement of a Stent Graft for Abdominal Aortic Repair in a Pulsating Flow

Mikhail Tokarev, Håkan Roos, Håkan Nilsson et al
PIV15; 11th International Symposium on Particle Image Velocimetry, Santa Barbara, California, USA, September 14-16, 2015, p. 1-12
Conference paper - non peer reviewed
2015

Time-accurate Numerical Simulations of Swirling Flow with Rotor-stator Interaction

Ardalan Javadi, Håkan Nilsson,
Flow Turbulence and Combustion. Vol. 95 (4), p. 755-774
Scientific journal article - peer reviewed
2015

CFD-based design and analysis of the ventilation of an electric generator model, validated with experiments

Hamed Jamshidi, Håkan Nilsson, Valery Chernoray et al
International Journal of Fluid Machinery and Systems. Vol. 8 (2), p. 113-123
Scientific journal article - peer reviewed
2015

A fully synthetic turbulent boundary condition with a homogeneous vortex distribution

Olle Penttinen, Håkan Nilsson,
Computer Physics Communications. Vol. 190, p. 23-32
Scientific journal article - peer reviewed
2015

Steady and unsteady numerical simulations of the flow in the Tokke Francis turbine model, at three operating conditions

Lucien Stoessel, Håkan Nilsson,
J. Phys.: Conf. Ser. 579 012011
Conference paper - peer reviewed
2015

LES and DES of Strongly Swirling Turbulent Flow through a Suddenly Expanding Circular Pipe

Ardalan Javadi, Håkan Nilsson,
Computers & Fluids. Vol. 107, p. 301–313
Scientific journal article - peer reviewed
2014

MODELLING OF ELECTRODE-ARC COUPLING IN ELECTRIC ARC WELDING

Alireza Javidi Shirvan, Isabelle Choquet, Håkan Nilsson et al
Swedish Production Symposium 14
Conference paper - peer reviewed
2014

Experimental and numerical investigation of hydro power generator ventilation

Hamed Jamshidi, Håkan Nilsson, Valery Chernoray et al
IOP Conference Series - Earth and Environmental Science: 27th IAHR Symposium on Hydraulic Machinery and Systems (IAHR). Vol. 22, p. Art. no. 012007
Conference paper - peer reviewed
2014

LES and DES of swirling flow with rotor-stator interaction

Ardalan Javadi, Håkan Nilsson,
Progress in Hybrid RANS-LES Modelling. Vol. 130, p. 457-468
Conference paper - peer reviewed
2014

Velocity and pressure fluctuations induced by the precessing helical vortex in a conical diffuser

Ardalan Javadi, Alin Bosic, Håkan Nilsson et al
27th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2014; Hotel Omni Mont-RoyalMontreal; Canada; 22 September 2014 through 26 September 2014. Vol. 22, p. Art. no. 032009
Conference paper - peer reviewed
2014

Unsteady numerical simulation of the flow in the U9 Kaplan turbine model

Ardalan Javadi, Håkan Nilsson,
27th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2014; Hotel Omni Mont-RoyalMontreal; Canada; 22 September 2014 through 26 September 2014. Vol. 22, p. Art. no. 022001
Conference paper - peer reviewed
2014

A comparative study of scale-adaptive and large-eddy simulations of highly swirling turbulent flow through an abrupt expansion

Ardalan Javadi, Håkan Nilsson,
27th IAHR Symposium on Hydraulic Machinery and Systems, Montreal, Canada, p. Art. no. 022017
Conference paper - peer reviewed
2014

Evaluation of an improved mixing plane interface for OpenFOAM

Martin Beaudoin, Håkan Nilsson, Maryse Page et al
Proceedings of 27th symposium of hydraulic machinery and systems, 2014, Montreal, Canada
Conference paper - peer reviewed
2014

ANALYSIS OF THE INFLUENCE OF THE COMPOSITION OF THE SHIELDING GAS ON PRESSURE FORCE AND HEAT FLUXES IN ARC WELDING

Isabelle Choquet, Håkan Nilsson,
Proceedings of sixth Swedish Production Symposium
Conference paper - peer reviewed
2014

Numerical investigation of fiber flocculation in the air flow of an asymmetric diffuser

Jelena Andric, Stefan B. Lindström, Srdjan Sasic et al
Proceedings of the ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting and 12th International Conference on Nanochannels, Microchannels and Minichannels, FEDSM 201, August 3-7, Chicago, Illinois, USA.
Conference paper - peer reviewed
2014

Rheological properties of dilute suspensions of rigid and flexible fibers

Jelena Andric, Stefan B. Lindström, Srdjan Sasic et al
Journal of Non-Newtonian Fluid Mechanics. Vol. 212, p. 36-46
Scientific journal article - peer reviewed
2014

Direct numerical simulations of near-surface turbulence - an evaluation of methods for estimating air-water gas exchange

Sam Fredriksson, Lars Arneborg, Håkan Nilsson et al
Ocean Science Meeting 2014
Conference poster
2014

Experimental assessment of a fully predictive CFD approach, for flow of cooling air in an electric generator

Pirooz Moradnia, Valery Chernoray, Håkan Nilsson et al
Applied Energy. Vol. 124, p. 223-230
Scientific journal article - peer reviewed
2014

Flow of cooling air in an electric generator model - An experimental and numerical study

Pirooz Moradnia, Maxim Golubev, Valery Chernoray et al
Applied Energy. Vol. 114, p. 644-653
Scientific journal article - peer reviewed
2014

Displacement Forces in Iliac Landing Zones and Stent Graft Interconnections in Endovascular Aortic Repair: An Experimental Study

Håkan Roos, Mostaffa Ghaffari, Mårten Falkenberg et al
European Journal of Vascular and Endovascular Surgery. Vol. 47 (3), p. 262-267
Scientific journal article - peer reviewed
2013

Advanced numerical prediction of strongly swirling turbulent flows

Ardalan Javadi, Håkan Nilsson,
5th International Workshop on Cavitation and Dynamic Problems in Hydraulic Machinery. Vol. 23
Conference paper - non peer reviewed
2013

Magnetic field models for high intensity arcs, applied to welding - A comparison between three different formulations

Isabelle Choquet, Alireza Javidi Shirvan, Håkan Nilsson et al
9th International Conference on Trends in Welding Research; Chicago, IL; United States; 4 June 2012 through 8 June 2012, p. 876-885
Conference paper - peer reviewed
2013

Numerical Investigations of Unsteady Flow in a Centrifugal Pump with a Vaned Diffuser

Olivier Petit, Håkan Nilsson,
International Journal of Rotating Machinery. Vol. Volume 2013
Scientific journal article - peer reviewed
2013

A study of a flexible fiber model and its behavior in DNS of turbulent channel flow

Jelena Andric, Sam Fredriksson, Stefan B. Lindström et al
Acta Mechanica. Vol. 224 (10), p. 2359-2374
Scientific journal article - peer reviewed
2013

A particle-level rigid fiber model for high-Reynolds number flow, implemented in a general-purpose CFD code

Jelena Andric, Stefan B. Lindström, Srdjan Sasic et al
8th International Conference on Multiphase Flow ICMF 2013, Korea
Conference paper - peer reviewed
2013

Description and validation of a flexible fiber model, implemented in a general-purpose CFD code

Jelena Andric, Stefan B. Lindström, Srdjan Sasic et al
Proceedings of the 8th International Conference on Multiphase Flow ICMF 2013, Korea
Conference paper - peer reviewed
2012

Numerical modelling of shielding gas flow and heat transfer in laser welding process

Alireza Javidi Shirvan, Isabelle Choquet, Håkan Nilsson et al
Proceedings of The 5th International Swedish Production Symposium, Linköping, Sweden, p. 269-276
Conference paper - peer reviewed
2012

PIV Measurement of Air Flow in a Hydro Power Generator Model

Erwin Hartono, Maxim Golubev, Pirooz Moradnia et al
16th Int Symp on Applications of Laser Techniques to Fluid Mechanics
Conference paper - non peer reviewed
2012

Mathematical, numerical and experimental analysis of the swirling flow at a Kaplan runner outlet

Sebastian Muntean, Tiberiu Ciocan, Romeo Susan-Resiga et al
IOP Conference Series-Earth and Environmental Science: 26th IAHR Symposium on Hydraulic Machinery and Systems. Vol. 15 (Part 3), p. Art. no. 032001
Conference paper - peer reviewed
2012

Simulations of the vortex in the Dellenback abrupt expansion, resembling a hydro turbine draft tube operating at part-load

Håkan Nilsson,
IOP Conference Series-Earth and Environmental Science: 26th IAHR Symposium on Hydraulic Machinery and Systems. Vol. 15, p. Art. no. 022016
Conference paper - peer reviewed
2012

Effects of inlet boundary conditions, on the computed flow in the Turbine-99 draft tube, using OpenFOAM and CFX

Håkan Nilsson, Michel Cervantes,
IOP Conference Series-Earth and Environmental Science: 26th IAHR Symposium on Hydraulic Machinery and Systems. Vol. 15 (PART 3), p. Art. no. 032002
Conference paper - peer reviewed
2012

EXPERIMENTAL AND NUMERICAL STUDY OF COOLING AIR FLOW IN A HYDROELECTRIC GENERATOR

Pirooz Moradnia, Valery Chernoray, Håkan Nilsson et al
European Research Comunnity On Flow, Turbulence and Combustion, ETMM9
Conference paper - peer reviewed
2012

A PIV Study of The Cooling Air Flow in An Electric Generator Model

Erwin Hartono, Maxim Golubev, Pirooz Moradnia et al
Report
2012

On the choice of electromagnetic model for short high-intensity arcs, applied to welding

Isabelle Choquet, Alireza Javidi Shirvan, Håkan Nilsson et al
J. Phys. D: Appl. Phys.. Vol. 45 (20)
Scientific journal article - peer reviewed
2012

Transient and steady-state air flow simulations in generators using OpenFOAM

Pirooz Moradnia, Håkan Nilsson, Maryse Page et al
Report
2011

Procedure for the break-up of cavitation sheet

Aurelia Vallier, Johan Revstedt, Håkan Nilsson et al
4-th International Meeting on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, October, 26-28, 2011, Belgrade, Serbia, p. 77-85
Conference paper - non peer reviewed
2011

Unsteady Simulations of the Flow in a Swirl Generator, using OpenFOAM

Olivier Petit, Håkan Nilsson, Sebastian Muntean et al
International Journal of Fluid Machinery and Systems. Vol. 4 (1), p. pp.199-208
Scientific journal article - peer reviewed
2011

Electric welding arc modeling with the solver OpenFOAM - A comparison of different electromagnetic models

Isabelle Choquet, Alireza Javidi Shirvan, Håkan Nilsson et al
International Institute of Welding Document No 212-1189-11, July 2011.
Conference paper - peer reviewed
2011

IMPLEMENTATION OF A 3D SOLVER FOR ELECTRIC ARC WELDING, COUPLING FLUID MECHANICS WITH ELECTROMAGNETICS

Håkan Nilsson, Isabelle Choquet, Margarita Sass-Tisovskaya et al
HEFAT2011 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 11 – 13 July 2011, Pointe Aux Piments, Mauritius
Conference paper - peer reviewed
2011

EXPERIMENTAL AND NUMERICAL INVESTIGATION OF THE COOLING AIR FLOW IN AN ELECTRIC GENERATOR

Pirooz Moradnia, Valery Chernoray, Håkan Nilsson et al
HEFAT2011, 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, p. 242-249
Conference paper - peer reviewed
2011

A PARAMETRIC STUDY OF THE AIR FLOW IN AN ELECTRIC GENERATOR THROUGH STEPWISE GEOMETRY MODIFICATIONS

Pirooz Moradnia, Håkan Nilsson,
An ECCOMAS Thematic Conference, CFD and OPTIMIZATION (040)
Conference paper - peer reviewed
2011

Modeling and simulation of a heat source in electric arc welding

Isabelle Choquet, Håkan Nilsson, Margarita Sass-Tisovskaya et al
Proceedings from the 4th Swedish Production Symposium, Lund, Sweden, p. 202-211
Conference paper - peer reviewed
2011

Numerical simulation of Ar-x%CO2 shielding gas and its effect on an electric welding arc

Isabelle Choquet, Håkan Nilsson, Alireza Javidi Shirvan et al
IIW Commission XII / SG 212 Intermediate meeting, University West, Trollhättan, Sweden, 21 - 23 March 2011, IIW Doc. XII-2017-11
Conference paper - non peer reviewed
2010

A swirl generator case study for OpenFOAM

Olivier Petit, Alin Bosioc, Håkan Nilsson et al
25th IAHR Symposium on Hydraulic Machinery and Systems
Conference paper - peer reviewed
2010

Comparison of numerical and experimental results of the flow in the U9 Kaplan turbine model

Olivier Petit, Berhanu Mulu, Håkan Nilsson et al
25th IAHR Symposium on Hydraulic Machinery and Systems
Conference paper - peer reviewed
2010

Simulation of Venous Plexus Blood Flow during Rapid Spinal Bending

Mats Y. Svensson, Lars Davidson, Håkan Nilsson et al
Proc. 6th World Congress of Biomechanics, Singapore, 1-6 August 2010
Conference paper - peer reviewed
2010

Mass transfer cavitation model with variable density of nuclei

Aurelia Vallier, Håkan Nilsson, Johan Revstedt et al
7th International Conference on Multiphase Flow, ICMF 2010, Tampa, USA, May 31-June 4, 2010
Conference paper - peer reviewed
2010

CFD of Air Flow in Hydro Power Generators for Convective Cooling, using OpenFOAM

Pirooz Moradnia, Håkan Nilsson,
5th European Conference on Computational Fluid Dynamics, ECCOMAS CFD 2010, p. 556
Conference paper - peer reviewed
2009

3D numerical analysis of the unsteady turbulent swirling flow in a conical diffuser using Fluent and OpenFOAM

Sebastian Muntean, Håkan Nilsson, Romeo Susan-Resiga et al
Proceedings of the 3rd IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems. Vol. 1, p. 155-164
Conference paper - peer reviewed
2009

The ERCOFTAC centrifugal pump OpenFOAM case-study

Olivier Petit, Maryse Page, Martin Beaudoin et al
IAHR International Meeting of the Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, p. 523-532
Conference paper - peer reviewed
2009

Numerical Estimation of Torsional Dynamic Coefficients of a Hydraulic Turbine

Martin Karlsson, Håkan Nilsson, Jan-Olov Aidanpää et al
International Journal of Rotating Machinery. Vol. 2009
Scientific journal article - peer reviewed
2008

The flow in the U9 Kaplan turbine - preliminary and planned simulations using CFX and OpenFOAM

Olivier Petit, Håkan Nilsson, Thi VU et al
24th IAHR Symposium Hydraulic MAchinery and Systems, Foz Do Iguassu, Brasil
Conference paper - peer reviewed
2008

The OpenFOAM Turbomachinery Working Group, and Conclusions from the Turbomachinery Session of the Third OpenFOAM Workshop

Håkan Nilsson, Maryse Page, Martin Beaudoin et al
24th IAHR Symposium on Hydraulic Machinery and Systems, Foz do Iguassu, Brazil
Conference paper - peer reviewed
2008

INFLUENCE OF INLET BOUNDARY CONDITIONS IN THE PREDICTION OF ROTOR DYNAMIC FORCES AND MOMENTS FOR A HYDRAULIC TURBINE USING CFD

Karlsson Martin, Håkan Nilsson, Aidanpää Jan-Olov et al
Proceedings of the 12th International Symposium on Transport Phenomenoa and Dynamics of Rotating Machinery (ISROMAC), Honolulu, Hawaii, February 17-22, 2008.
Conference paper - peer reviewed
2008

Design and Validation of a Scale-Adaptive Filtering Technique for LRN Turbulence Modeling of Unsteady Flow

Walter Gyllenram, Håkan Nilsson,
Journal of Fluid Engineering. Vol. Volume 130 (Issue 5), p. 10
Scientific journal article - peer reviewed
2007

Experiences with OpenFOAM for water turbine applications

Håkan Nilsson,
Proceedings of the 1st OpenFOAM International Conference, 26-27 November 2007, Beaumont House, Old Windsor, United Kingdom.
Conference paper - peer reviewed
2007

Computations of unsteady cavitating flow on wing profiles using a volume fraction method and mass transfer models

Tobias Huuva, Aurelia Cure, Göran Bark et al
Proceedings of the 2nd IAHR International Meeting of the Workgroup on Cavitation and Dynamical Problems in Hydraulic Machinery and Systems, Scientific Bulletin of the "Polytechnica" University of Timisoara, Romania. Transactions on Mechanics. Vol. 52 (66), p. 21-34
Conference paper - non peer reviewed
2007

On the failure of the quasicylindrical approximation and the connection to vortex breakdown in turbulent swirling flow

Walter Gyllenram, Håkan Nilsson, Lars Davidson et al
Physics of Fluids. Vol. 19 (4)
Scientific journal article - peer reviewed
2007

Some experiences on the accuracy and parallel efficiency of OpenFOAM for CFD in water turbines

Håkan Nilsson,
Lecture Notes in Computer Science. Vol. 4699/2007, p. 168-176
Conference paper - non peer reviewed
2006

An Adaptive Turbulence Model for Swirling Flow

Ivana Buntic-Ogor, Walter Gyllenram, Eugene Ohlberg et al
Conference on Turbulence and Interactions, TI2006, May 29 - June 2, 2006, Porquerolles, France
Conference paper - peer reviewed
2006

Large Eddy Simulation of Turbulent Swirling Flow Through a Sudden Expansion

Walter Gyllenram, Håkan Nilsson, Lars Davidson et al
23rd IAHR Symposium, Yokohama, Japan, October 2006
Conference paper - peer reviewed
2006

Very Large Eddy Simulations of Draft Tube Flow

Walter Gyllenram, Håkan Nilsson,
23rd IAHR Symposium, Yokohama, Japan, October 2006
Conference paper - peer reviewed
2006

Evaluation of OpenFOAM for CFD of turbulent flow in water turbines

Håkan Nilsson,
IAHR 2006
Conference paper - peer reviewed
2005

OpenFOAM SIMULATION OF THE FLOW IN THE HöLLEFORSEN DRAFT TUBE MODEL

Håkan Nilsson, Maryse Page,
Turbine-99 III workshop
Conference paper - peer reviewed
2004

Numerical Investigations of Swirling flow in a Conical Diffuser

Walter Gyllenram, Håkan Nilsson,
22nd IAHR Symposium, Stockholm, Sweden, June 29 - July 2, 2004. Vol. A, p. A09-2 (1-10)
Conference paper - peer reviewed
2003

Temporally fluctuating prey and coexistence among unequal conspecific interferers

P. Anders Nilsson, Graeme D. Ruxton, Håkan Nilsson et al
Oikos. Vol. 101, p. 411-415
Scientific journal article - peer reviewed
2003

Assessment of turbulence modelling for CFD simulations into hydroturbines: spiral casings

Luis C. Eduardo Oliveira de Souza, Marcelo Dias de Moura, Antonio C.P. Brasil Junior et al
17th International Mechanical Engineering Congress (COBEM 2003) at São Paulo (Brazil)
Conference paper - peer reviewed
2003

Application of an Angular Momentum Balance Method for Investigating Numerical Accuracy in Swirling Flow

Håkan Nilsson, Lars Davidson,
J. Fluids Eng.. Vol. 125 (4), p. 723-730
Scientific journal article - peer reviewed
2003

Validations of CFD against detailed velocity and pressure measurements in water turbine runner flow

Håkan Nilsson, Lars Davidson,
Int. J. Numer. Meth. Fluids. Vol. 41, p. 863-879
Scientific journal article - peer reviewed
2002

Validations and investigations of the computed flow in the GAMM Francis runner and the Hölleforsen Kaplan runner

Håkan Nilsson, Lars Davidson,
Proceedings of the 21st IAHR Symposium
Conference paper - peer reviewed
2001

A Numerical Investigation of the Flow in the Wicket Gate and Runner of the Hölleforsen (Turbine-99) Kaplan Turbine Model

Håkan Nilsson, Lars Davidson,
Proceedings of Turbine 99 - II
Conference paper - peer reviewed
2001

Parallel multiblock CFD computations applied to industrial cases

Håkan Nilsson, Simon Dahlström, Lars Davidson et al
Parallel Computational Fluid Dynamics - Trends and applications, p. 525-532
Conference paper - peer reviewed
2000

A Numerical Comparison of Four Operating Conditions in a Kaplan Water Turbine, Focusing on Tip Clearance Flow

Håkan Nilsson, Lars Davidson,
Proceedings of the 20th IAHR Symposium
Conference paper - peer reviewed
1999

A numerical investigation of tip clearance flow in Kaplan water turbines

Håkan Nilsson, Lars Davidson,
Proceedings of HYDROPOWER INTO THE NEXT CENTURY - III, p. 327-335
Conference paper - peer reviewed