Computing the flow past Vortex Generators: Comparison between RANS Simulations and Experiments

The Science of Making Torque from Wind

Manolesos, M.^1,4 ; Sørensen, N.N.^2 ; Troldborg, N.^2 ; Florentie, L.^3 ; Papadakis, G.^1 ; Voutsinas, S.^1

Laboratory of Aerodynamics, National Technical University of Athens, 9 Heroon Polytechneiou Str., Athens

15780, Greece^1

Technical University of Denmark, DTU Wind Energy, Risø Campus, Frederiksborgvej 399, Roskilde

4000, Denmark^2

Delft Technical University, Faculty of Aerospace Engineering, Kluyverweg 1, Delft

2629 HS, Netherlands^3

Flowfield Private Company, Antigonis 6, Athens, Greece^4

关键词: Cost-efficient;    Force coefficients;    Numerical diffusion;    RANS simulation;    Reynolds-averaged navier stokes solvers;    Vortex generators;    Wind turbine airfoils;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/2/022014/pdf
DOI  :  10.1088/1742-6596/753/2/022014

来源: IOP

【 摘 要 】

The flow around a wind turbine airfoil equipped with Vortex Generators (VGs) is examined. Predictions from three different Reynolds Averaged Navier Stokes (RANS) solvers with two different turbulence models and two different VG modelling approaches are compared between them and with experimental data. The best results are obtained with the more expensive fully resolved VG approach. The cost efficient BAY model can also provide acceptable results, if grid related numerical diffusion is minimized and only force coefficient polars are considered.