TY - JOUR
T1 - Dynamic stall in vertical axis wind turbines
T2 - Comparing experiments and computations
AU - Buchner, A. J.
AU - Lohry, M. W.
AU - Martinelli, Luigi
AU - Soria, J.
AU - Smits, Alexander
N1 - Funding Information:
This work is supported in part by the Australian-American Fulbright Commission and Princeton University׳s Andlinger Center for Energy and the Environment . Support for this research was also provided by the National Science Foundation under Award Number 1336020 . Mr. Buchner gratefully acknowledges the guidance provided by Professor Damon Honnery while applying for a Fulbright Fellowship.
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - Dynamic stall is often found in unsteady aerodynamic flows where the angle of attack can vary over a large range. It is of particular interest in the context of vertical axis wind turbines, where dynamic stall is the principal impediment to achieving improved aerodynamic efficiency. Here, we report computations using the unsteady Reynolds-averaged Navier-Stokes (URANS) equations with the Menter-SST turbulence model on a two-dimensional domain, over a range of tip speed ratios typical of the operation of vertical axis wind turbines. Comparisons are made against high resolution experimental data from particle image velocimetry (PIV), with special attention to the ability of the turbulence model to emulate the turbulence properties of the flow. It is shown that the computations approximate the experimental results well in most respects.
AB - Dynamic stall is often found in unsteady aerodynamic flows where the angle of attack can vary over a large range. It is of particular interest in the context of vertical axis wind turbines, where dynamic stall is the principal impediment to achieving improved aerodynamic efficiency. Here, we report computations using the unsteady Reynolds-averaged Navier-Stokes (URANS) equations with the Menter-SST turbulence model on a two-dimensional domain, over a range of tip speed ratios typical of the operation of vertical axis wind turbines. Comparisons are made against high resolution experimental data from particle image velocimetry (PIV), with special attention to the ability of the turbulence model to emulate the turbulence properties of the flow. It is shown that the computations approximate the experimental results well in most respects.
KW - Dynamic stall
KW - PIV
KW - Turbulence modelling
KW - URANS
KW - Vertical axis wind turbine
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U2 - 10.1016/j.jweia.2015.09.001
DO - 10.1016/j.jweia.2015.09.001
M3 - Article
AN - SCOPUS:84942510493
SN - 0167-6105
VL - 146
SP - 163
EP - 171
JO - Journal of Wind Engineering and Industrial Aerodynamics
JF - Journal of Wind Engineering and Industrial Aerodynamics
ER -