一种用于二维燃烧室流场计算的非结构网格的生成方法

本文依照Ｄｅｌａｕｎａｙ 准则构造二维非结构网格，并提出了一种与之相应的基于阵面推进法的自动生成新的内部节点的方法。文中给出了利用这一方法对边界形状复杂的燃烧室流场进行网格划分时，所得的非结构网格，及网格相应的质量统计特性。从这些算例可以看出，这一方法能够较好地适应复杂的几何外形，得到分布合理，并且大多数单元形状接近正三角形的非结构网格

A METHOD FOR CONSTRUCTING TWO-DIMENSIONAL DELAUNAY TRIANGULATION OF COMBUSTOR FLUID

A method is presented here for constructing two-dimensional Delaunay triangulation with a new automatic point creation technique.This technique is based on the idea of advancing-front method to achieve good geometry flexibility.The main steps are as follows:The initial triangulation is generated first,according to the given border set.In the initial triangulation usually there are lots of triangles with very small minimum angles which will seriously decrease computational accuracy.The new nodes are introduced with advancing-front method,and added into the existing mesh according to Bowyer-Watson algorithm simultaneously.The procedure is repeated until no more improvement of the grid can be achieved by inserting the new nodes.Its application to triangulating combustor fluid shows that the resulted grids have great regularity and boundary quality.