根据汽车空气动力学仿真的要求，结合模型客车，应用可视化技术，首先对汽车车身表面进行了合理的分片及参数化处理；然后应用网格生成的基本原理和方法，生成了参数空间的网格；最后应用计算几何理论，将参数空间的网格变换到了物理空间，即得到了汽车车身表面的气动网格。 According to the requirements of automotive aerodynamics simulation, combined with the model bus and visualization technology, the automobile body surface is firstly rationally sliced ​​and parameterized. Then, the basic principles and methods of grid generation are used to generate the network of parameter space Grid; Finally, the application of computational geometry theory, the parameter space grid transformed into the physical space, that is, the automotive body surface pneumatic grid.