航空学报 > 1987, Vol. 8 Issue (5): 292-295

二维扩压器和进气道内正交贴体曲线坐标的快速生成法

王立成, 刘春晖   

  1. 南京航空学院
  • 收稿日期:1986-07-14 修回日期:1900-01-01 出版日期:1987-05-25 发布日期:1987-05-25

A FAST GENERATION METHOD OF ORTHOGONAL BODY-FITTED COORDINATE SYSTEMS FOR TWO-DIMENSIONAL DIFFUSERS AND INLETS

Wang Licheng, Lu Chunhui   

  1. Nanjing Aeronautical Institute
  • Received:1986-07-14 Revised:1900-01-01 Online:1987-05-25 Published:1987-05-25

摘要: 贴体曲线坐标系的形成是用有限差分法或有限元素法在诸如扩压器和进气道这类任意形状的域内数值求解各类场时,所必需要做的第一步工作。 通常,对这种贴体曲线坐标系有若干要求。首先,所形成的曲线坐标系必须是“贴体”的,以便于精确地施加边界条件。其次,曲线坐标系最好是正交的,以使得计算平面内的控制方程变得较为简单(不出现交叉导数项),同时也使得便于应用双层零方程紊流模型。第三,所生成的网格系统的网格距要能随意控制,以便在域内计算变量变化

Abstract: The main features of the method proposed in this paper are orthogonal, very efficient, easy control of the mesh spacing both in and directions and the upper and lower boundaries can be discontinuous.Several numerical examples are performed on IBM/PC-XT mini computer. The typical run time for a field with 39×17 grid points is 8 min, which is several times faster than that with the method in [2].