KTH - Fluid Physics Laboratory

Research area and research group

KTH - Department of Mechanics is part of the Linne FLOW Centre, a centre of excellence in the fundamental and applied fluid-dynamic research. Research within the department is carried out in many different areas and the department houses among other things wind tunnels that are used for research within the wind energy field.

Wind energy research has been conducted for more than 30 years with investigations related to several different topics such as wind turbine wakes and active control strategies, actuator disk modeling, wind turbine interaction and atmospheric boundary layer studies.

KTH Mechanic's website

Wind-energy related projects

Projects that are currently ongoing or completed within the last few years

  • VR, Rambidrag för strategisk energiforskning (Sponsored by Swedish Research Council), from 2014-2018, contact person: Antonio Segalini, KTH-Mek

  • Wake physics and farm control (Sponsored by Energimyndigheten), contact person: Antonio Segalini, KTH-Mek

  • Vindkraft i skog II (Sponsored by Vindforsk), contact person: Antonio Segalini, KTH-Mek

  • Active wake control (Sponsored by Elforks and Vindforsk), contact person: Antonio Segalini, KTH-Mek

  • Wind over forest (Sponsored by Vindforsk III) from 2010-2013, completed

  • Nordic Consortium on Wind Farm Optimization and Control from 2009-2013, completed





Research area


Dan Henningson


Stability and transition, computational fluid dynamics, wake instability


Henrik Alfredsson


Transitional and turbulent flows, experimental fluid dynamics


Jens Fransson


Transition in boundary layers, wakes

Senior Lecturer

Philipp Schlatter


Transitional and turbulent flows, computational fluid dynamics


Stefan Ivanell


Wind-turbine wakes, wind-energy simulations


Antonio Segalini


Turbulent flows, Wind-energy modelling
Graduate student Vitor Kleine vitok@mech.kth.se

Wind-energy related publications

You can find these publications in the DIVA database.

2016, A linearised numerical model of wind-farm flows. R. Ebenhoch, B. Muro, J-Å Dahlberg, P. Berkesten Hägglund & A. Segalini, Wind Energy., doi: 10.1002/we.2067.

2016, A Linearized k − e Model of Forest Canopies and Clearings. A. Segalini, T. Nakamura & K. Fukagata, Boundary-Layer Meteorology., doi: 10.1007/s10546-016-0190-5.

2014, Comparison of Engineering Wake Models with CFD Simulations, Andersen, S. J., S�rensen, J. N., Ivanell, S., Mikkelsen, R. F., Journal of Physics: Conference Series 524 (Torque 2014).

2014, Determination of Wind Turbine Near-Wake Length Based on Stability Analysis. S�rensen, J. N., Sarmast, S., Mikkelsen, R., Ivanell, S., Henningson, D., Journal of Physics: Conference Series 524 (Torque 2014).

2014, Numerical investigation of the wake interaction between two model wind turbines with span-wise offset. Sarmast, S., Chivaee, H.S., Ivanell, S., Mikkelsen, R., Journal of Physics: Conference Series 524 (Torque 2014).

2014, Simulation of Wind Turbine Wakes. Sorensen, J.N., Mikkelsen, R., Henningson, Ivanell, S., Sarmast, S., Andersen, S., Submitted to Royal Society Publishing June 2014.

2014, A comparison between a simplified vortex model and actuator line simulations of a horizontal axis wind turbine. Sarmast, S., Segalini, A., Mikkelsen, R.F., Ivanell, S., Submitted to Journal of Wind Energy.

2014, Mutual inductance instability of the helical tip vortices behind a wind turbine. Sarmast, S., Dadfar, R., Mikkelsen, R.F., Schlatter, S., lvanell, S., Henningson, D.S., Submitted to JFM.

2013, Outer-layer turbulence intensities in smooth- and rough-wall boundary layers. I.P. Castro, A. Segalini & P.H. Alfredsson, J. Fluid Mech., 727, 119-131

2013, A simplified vortex model of propeller and wind-turbine wakes, A. Segalini & P.H. Alfredsson J., Fluid Mech., 725, 91-116.

2013, Scaling Laws in Canopy Flows: A Wind-Tunnel Analysis. A. Segalini, J.H.M. Fransson & P.H. Alfredsson Bound.-Lay. Meteorol., 148, 269-283

2013, The stability and development of tip and root vortices behind a model wind turbine. Y. Odemark & J.H.M. Fransson, Exp. Fluids, 54, 1591

2013, Mutual instability of the tip vortices behind a wind turbine.Sarmast, S., Dadfar, R., Mikkelsen, R.F., Schlatter, S., lvanell, S., Henningson, D.S. Submitted to JFM, 2013.

2013, Characterization of wind turbine wake in a uniform inflow with homogeneous turbulence using the actuator disk method. Olivares-Espinosa, H., Breton, S.-P., Nilsson, K., Masson, C., Dufresne, L. Ivanell, S. ICOWES2013 Conference, Denmark.

2013, Large-eddy simulations of the Lillgrund wind farm.Nilsson, K., Ivanell, S. , Hansen, K.S., Mikkelsen, R., S�rensen, J.N., Breton, S.-P., Henningson, D. Accepted for publication in Wind Energy.

2012, Techniques for the Eduction of Coherent Structures from Flow Measurements in the Atmospheric Boundary Layer. A. Segalini & P.H. Alfredsson Bound.-Lay. Meteorol., 143, 433-450.

2011, The upstream flow of a wind turbine: blockage effect.D. Medici, S. Ivanell, J-�. Dahlberg, P.H. Alfredsson. Wind Energy, 2011, Volume 14, Issue 5, p691-697.

2010, Stability analysis of the tip vortices of a wind turbine. Stefan Ivanell, Robert Mikkelsen, Jens N S�rensen, Dan Henningson.Wind Energy, 2010, Volume 13, Issue 8, p705-715

2010, Stability analysis of the tip vortices of a wind turbine. Ivanell, S., Mikkelsen, R., Sorensen, J.N., Henningson, D.S., Wind Energy, 13(8): p. 705-715.

2009, Analysis of Numerically Generated Wake Structures. Ivanell, S., Sorensen, J.N., Mikkelsen, R., Henningson, D.S., Wind Energy, 12(1): p. 63-80.

2008, Measurements behind model wind turbines: further evidence of wake meandering. D. Medici & P.H. Alfredsson, Wind Energy, 11, 211-217.

2007, Numerical computations of wind turbine wakes. Ivanell, S., Sorensen, J.N. and Henningson, D., Wind Energy, Springer, ed. J. Peinke, P. Schaumann, and S. Barth, p:259-263.

2007, Numerical analysis of the tip and root vortex position in the wake of a wind turbine. Ivanell, S., S�rensen, J.N., Mikkelsen, R., Henningson, D. Journal of Physics, Conference Series Volume 75, Science of Making Torque from Wind, J.N. S�rensen, M.O.L. Hansen and K. S. Hansen, Editors. p. 12035-12035.

2006, Measurements on a wind turbine wake: 3D effects and bluff body vortex shedding. D. Medici & P.H. Alfredsson, Wind Energy, 9, 219-236