生成正交曲线坐标网格用以进行流体动力学的数值计算

Numerical Generation of Orthogonal Curvilinear Grids for Estimating Air Flow in Engine

本文描述了适用流体动力学数值计算中生成正交曲线坐标网格的方法。它是在物理坐标面上,对一组拉普拉斯方程进行数值解而得到的。文中依此方法,生成了柴油机气缸内气体流动计算中常用的两种网格,其结果充分显示了此方法的可用性。

A Amethod of generating orthogonal curvilinear grids,which is used in the numerical calculation of the gas flow in the IC engine,is presented in this paper.The grids on the physical coordinate plane areobtained from the numerical solutions of a set of Laplace's equations.According to this method,two commonly used grids in the calculation ofthe gas f(?)ow in the diesel cylinder are generated The results show thatthe method is practicable.