关于非结构网格生成中的背景函数

Background Function for Generation of Unstructured Grids

背景信息对于用阵面推进法生成非结构网格是一个关键的环节 .文章基于众多文献中提到的背景信息提供方法 ,提出一种更为实用的背景信息提供技术 .此方法不仅避免了不必要的机时 ,内存的消耗 ,又使网格具有光滑性 ,网格的生成具有灵活性 ,方便性的特点 .基于生成的网格采用有限体积法研究无粘高超音速化学非平衡流的流场分布 。

Background information is one of the important aspects in the generation of unstructured grids by advancing-front method. Background information is generally obtained through creating background grids. To avoid the waste of time and memories in creating background grids, the article proposes an adaptive function to control the size of grids. It was proved that the method was useful and high effective. Based on the unstructured grids generated with the above function, and in combination with finite volume method, hypersonic nonequilibrium flows with chemical reactions were successfully calculated.