Abstract
The practical aerodynamic simulation basically uses the standard (wall function used) k-åturbulent model and some new ideas. Firstly, the third-order upwind scheme (MUSCL[1]) is introduced to the convective term to improve flow field and pressure distribution. Secondly, the modified turbulent energy production method (M.P.Method) which was proposed by B.E.Launder[2] in 1993, is introduced to the k-å turbulent model to reduce the excessive generation of turbulent kinetic energy. Thirdly, interactive pre-, post-processor and the steady state calculational methods are applied. It takes 20 hours to generate a calculational mesh from design CAD data by using a new semi-automatic mesh generator, also it takes 8 hours to get the steady flow result by using high performance engineering work station (EWS), DEC 3000 model 900, 1 CPU. Consequently it takes only 4 days to get an aerodynamic solution within an error of 5% for CD (Drag Coefficient) and CL (Lift Coefficient).