Computational Simulation of Airfoils Stall Aerodynamics at Low Reynolds Numbers

摘要

Experimental results for aerodynamic static hysteresis at stall conditions obtained in the TsAGI's T-124 low-turbulence wind tunnel for NACA0018 are presented and analysed. Computational predictions of aerodynamic static hysteresis are made using the OpenFOAM simulations considering different grids, turbulence models and solvers. Comparisons of computational simulation results with experimental wind tunnel data are made for 2D NACA0018 and NACA0012 airfoils at low Reynolds numbers Re = (0:3 - 1:0) * 10~6. The properties of the proposed phenomenological bifurcation model for simulation of aerodynamic loads at the existence of static hysteresis are discussed.