【摘要】 采用基于k ω模型的SST(剪切应力输运 )湍流模型 ,综合了k ω和k ε湍流模型在边界层内外计算的优点 ,在数值试验和实际应用中表现出其准确及时预测分离的特性。计算结果与汽车模型在小型风洞中的试验结果比较吻合 ,尤其是关于湍流现象的模拟更是与现实物理情况一致更多还原

【Abstract】 In the paper, the k-ω-based SST (shear strain transport) turbulence model has been adopted to simulate the aerodynamics of an automobile by solving the Navier-Stokes equations. The SST model combines the strong points of k--ε and K-ω turblence models and performs well in both numerical experiment and practical application. The result of simulation, in particular, the simulation on turbulent flow shows reasonable agreement with the experiment in small wind tunnel.更多还原