The numerical simulation of turbulence flows over objects using multigrid methods based on hybrid grids

In this paper,the hybrid grid and multigrid is used to solve the turbulence Navier-Stokes equations.The prismatic grid is generated near the wall,and the unstructured grid is generated in the other field.Based on algebraic Baldwin-Lomax turbulewe model,a Navier-Stokes solver using Jamson's finit-volume method is developed.The multigrid algorithm is used to accelerate the convergence also.Numerical tests show that using this method is effective.