APPLICATION OF MULTIBLOCK PATCHED GRID TO NUMERICAL CALCULATION OF NAVIER-STOKES EQUATIONS FOR FLOWFIELDS AROUND THE VEHICLES OF COMPLEX CONFIGURATION

摘要

In this paper, A multiblock patched grid and "o" type grid is used. By using the idea of unstructured grid generation, "one layer" of multiblock patched grid is generated on the surface of the vehicles, then the whole domain is filled up by a number of multiblock patched grid. The quality of grid and geometric flexibility is ensured and the efficiency of computation is improved. A MUSCL upwind-biased finite-volume scheme is applied to solving Navier-Stokes equations, An algorithm of the order of the multiblock patched grid is researched. Finally, numerical computations of the flowfields around the vehicles are carried at trisonic. Computed results are coincident with experimental results.