平板边界层转捩的仿真

对计算流体力学(CFD)的难点问题--零压力梯度平板边界层转捩进行了成功仿真.利用商业软件FLUENT的二次开发功能,一种符合现代CFD技术要求的先进转捩模型--Gamma-Theta被用于仿真中,并采用了设置来流粘性比的新方法来进行基于SST k-omega湍流模型的仿真.仿真结果表明,在不同的来流湍流水平下,Gamma-Theta转捩模型可以准确仿真包含自然转捩和bypass转捩现象的平板边界层流动,而设置来流粘性比的新方法对于成功的仿真也起到了关键作用.

Simulation of Flat-Plate Boundary Layer Transition

Zero-pressure-gradient flat-plate boundary layer transition,one of the complicated issues of Computational Fluid Dynamics(CFD),was simulated successfully.Using the secondary development of the commercial CFD software FLUENT,an advanced transition model,which is fully compatible to modern CFD techniques,was adopted in the simulation.A new method to set the freestream viscosity ratio was used in the simulation based on SST k-omega turbulence model.The results of the simulation indicate that,at different frees...