Abstract: A grids algorithm for two dimensional domains enclosed by four unregular and complicated lines was derived for the combustor of a small turbofan engine.The mathod was put into use successfully in application to CFD of the annular combustor.It proved that the algorithm has the advantages of simplicity,efficiency and accuracy.It was useful in the numerical simulation for the combustor of turbojet engines.

Key words: Turbojet engine;Annular combustor;Flow field simulation;Computer aided design;Grids method

摘要： 建立了一种关于由四条不规则边界线封闭的平面区域的通用网络生成数值的方法。生成了某型小涡扇发动机环形燃烧室的平面网络，应用在该燃烧室的ＣＦＤ计算中。实践证明该方法简单，计算快速、准确，在由复杂形状边界组成的喷气发动机燃烧室流场计算中具有重要的应用价值。

关键词: 涡轮喷气发动机;环形燃烧室;流场仿真;计算机辅助设计;格网法