论文部分内容阅读
将 Ｓｔｏｎｅ强隐式格式由单个方程推广到方程组，并用于三维高速可压缩流的 Ｅｕｌｅｒ和Ｎａｖｉｅｒ－Ｓｔｏｋｅｓ方程组的数值计算。为较好地捕捉激波、提高激波的分辨率，对离散后方程右端项的数值通量进行了改进，采用了ＮＮＤ格式的数值通量。典型三维算例表明，本格式具有高效率、高分辨率的特点，流场与实验数据较接近。
The strong implicit scheme of Stone is extended from a single equation to a system of equations and used for the numerical calculation of the Euler and Navier-Stokes equations of a three-dimensional high-speed compressible flow. In order to better capture the shock wave and improve the resolution of the shock wave, the numerical flux of the right end term of the discrete equation is improved, and the numerical flux of NND format is adopted. A typical three-dimensional example shows that this format has the characteristics of high efficiency and high resolution, and the flow field is close to the experimental data.