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本文以拉普拉斯方程为基础，反演推导了计算区域上的坐标变换控制方程，并据此提出了两种三维贴体网格的生成方法。用这两种方法生成了两种典型的网格系统，并在内燃机气缸燃烧室和涡轮增压器蜗壳内流场数值模拟计算中得到了应用，其结果证明是可行而有效的。
In this paper, based on the Laplace equation, the governing equations of coordinate transformation in the calculation area are inversed and inversed, and two methods of generating three-dimensional affixed grids are proposed. Two kinds of typical grid systems are generated by these two methods and applied to the numerical simulation of the flow field in the cylinder combustion chamber and turbocharger scroll of the internal combustion engine. The results prove to be feasible and effective.