用于全电磁粒子模拟的复杂建模及网格生成技术

Technique of complex geometry modeling and grid generation for fully electromagnetic particle simulation

基于Open CASCADE开源的计算机辅助几何设计类库,给出了全电磁粒子模拟中复杂模型构建技术及网格生成技术。介绍了Open CASCADE软件的基本特点;给出了基于Open CASCADE进行自主研发的用于全电磁粒子模拟的复杂模型构建软件EasyEMModeling的设计思想、程序框架及已具备的功能;基于Open CASCADE中的射线与几何体的求交算法,给出了Yee网格中共形描述3维复杂模型的共形网格生成技术;最后,给出了验证实例,证实了共形网格生成方法的正确性及有效性。

Based on Open object libraries,an open-source library for computer aided geometry design（CAGD）,the technique of complex geometry modeling and conformal grid generation used for fully electromagnetic particle simulation is given.The characteristics of Open CASCADE are introduced,the design,pattern and capability of EasyEMModeling,our self-developed codes for complex geometry modeling,are introduced,and the generation method of conformal boundary in Yee grids is given by using line-surface intersection function offered by Open CASCADE.Finally,the technique is verified by a 3D numerical experiment.