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为了在数值分析中正确反映叶轮机械内部动静叶排流场之间的相互干涉，本文解决了两个关键问题。首先，推导了二维、无粘、可压缩、多级流场的通道平均方程并对其中的确定应力项进行了模化。其次，在Ｇｉｌｅｓ理论的基础上，提出一种与时间推时法相匹配的，适用于多级流场计算的无反射边界条件，并从物理本质上解释了它的含义；发展了一种用时间推进法求解多级流场的连续界面方法。采用无反射边界条件比较了连续界面法和混合平面法两种级间参数传递模型的实际效果，因为考虑了动静叶间的干扰，连续界面法的计算结果更接近实际值。
In order to correctly reflect the mutual interference between the vane flow field in the impeller machinery in numerical analysis, this paper solves two key problems. First, the channel average equation of two-dimensional, non-stick, compressible, multi-stage flow field is deduced and the definite stress term is modeled. Secondly, on the basis of Giles theory, a nonreflective boundary condition that is suitable for time-flow method and suitable for multi-stage flow field calculation is proposed and its meaning is explained from the nature of physics. Propulsion Method for Solving Multi - stage Flow Field Continuous Interface Method. The non-reflection boundary conditions were used to compare the actual effect of two inter-stage parameter transfer models of continuous interface method and mixed-plane method. Because the interference between the moving and static leaves was considered, the result of continuous interface method was closer to the actual value.