Numerical Simulation of Leading-edge Tubercles Three-dimensional Airfoil with DES

摘要

In order to analyze the effect of leading-edge tubercles on drag and stalling performances of three-dimensional airfoil,this paper simulated the aerodynamic performance of leading-edge tubercles three-dimensional airfoil by using Detached Eddy Simulation (DES) method.The geometric model of leading-edge tubercles three-dimensional airfoil was built by ICEM software,and divided structural grid.The calculation results had shown that the leading-edge tubercles could improve the lift-drag ratio,and delay stalling by providing higher lift at higher incidence angle,and ameliorate the post-stall characteristics by maintaining higher lift with lower drag,and increase the aerodynamic performance of three-dimensional airfoil.