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本文用有限体积Ｇａｌｅｒｋｉｎ法求解了跨声速二维欧拉方程。求通量运用了Ｏｓｈｅｒ格式，通过外插把原来只有一阶精度的逆风格式改进成二阶精度。并采用基于线性化流量的隐式格式和非结构化网格，使程序具有较高的收敛效率。
In this paper, the finite volume Galerkin method is used to solve transonic two-dimensional Euler equations. Seek flux using the Osher format, by extrapolation only the first order accuracy of the wind format improved to second-order accuracy. The implicit scheme based on linearized traffic and unstructured grid are adopted to make the program have high convergence efficiency.