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研究了超音速钝锥绕流的稳定性和转捩点预报的数值计算方法 ,首先采用Euler方程求解钝锥绕流基本流场 ,用所得到的物面压力分布作为粘性边界层的外缘压力分布 ,给出了基本流场的初值 ;然后应用反迭代法与边界层渐近匹配的方法求解了钝锥边界层的稳定性方程 ,得到了钝锥边界层转捩数据 .该方法可提高计算精度 ,节约计算时间
The numerical simulation method for the stability and transition point prediction of the supersonic blunt cone flow was studied. The Euler equation was used to solve the basic flow field around the blunt cone, and the pressure distribution on the outer boundary of the viscous boundary layer was used as the pressure distribution in the boundary layer. The initial value of the basic flow field is given. Then, the stability equation of the boundary layer is solved by using the iterative iterative method and the asymptotic matching of the boundary layer, and the data of the boundary layer transition at the blunt cone are obtained. This method can improve the calculation accuracy , Save calculation time