Hybrid RANS/LES Simulations of a High-Lift Airfoil Using a Dynamic Linearized Wall Model on Cartesian Hierarchical Grids

This paper investigates the performances of the recently published Dynamic Linearized Wall Model in the framework of hybrid RANS/LES methods (ZDES mode 2 (2020)) for aeroacoustic studies. This method was derived in order to ensure a proper control of the numerical error on the total shear stress near the wall and provide appropriate grid convergence trends in wall-modeled simulations. Several wall-modeled simulations of the LEISA2 high-lift airfoil configuration are performed on hierarchical Cartesian grids, with different numerical implementations of the wall model. The results are thoroughly compared to experimental and LES reference results and demonstrate the superiority of this new Dynamic Linearized Wall Model upon more standard wall model implementations.