确定了本文数值模拟所采用的网格的生成技术，对流扩散项的离散格式，压力修正与速度修正方法，以及非线性代数方程组的求解方法。

The grid generation technique, difference scheme of convective and diffusive terms, pressure and velocity correction methods and arithmetic of nonlinear equations are determined.

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该方法的差分计算网格通过代数变换关系生成，可方便地应用于离心叶轮设计分析。

This method is accomplished with calculation grids generated by an algebraic transformation, and thus it can be easily applied to the design analysis of centrifugal impellers.

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法向外推方法生成的内层代数网格能够保证在物面附近的网格具有很好的正交性，并可控制第一层网格至物面距离；

The inner-layer grid generated with the algebraic method is orthogonal and easy to control the distance to the wall.

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