计算物理 ›› 2001, Vol. 18 ›› Issue (5): 402-406.

• 论文 • 上一篇    下一篇

三维非结构粘性网格生成方法

王刚1, 叶正寅1, 陈迎春2   

  1. 1. 西北工业大学飞机系, 陕西 西安 710072;
    2. 西安飞机设计所, 陕西 西安 710089
  • 收稿日期:2001-01-19 修回日期:2001-05-08 出版日期:2001-09-25 发布日期:2001-09-25
  • 作者简介:王刚(1977-),男,湖北,博士,主要从事计算流体力学问题研究.

GENERATION OF THREE-DIMENSIONAL USTRUCTURED VISCOUS GRIDS

WANG Gang1, YE Zheng-yin1, CHEN Ying-chun2   

  1. 1. Northwestern Polytechnical University, Xi'an 710072, P R China;
    2. Xi'an Aircraft Design and Research Institute, Xi'an 710089, P R China
  • Received:2001-01-19 Revised:2001-05-08 Online:2001-09-25 Published:2001-09-25

摘要: 描述了一套适合粘性流动计算的三维非结构网格自动生成方法.在物面附近的粘性作用区域,采用推进层方法生成各向异性的"扁平"四面体网格,并通过一定的网格伸长控制参数,实现整个流场区域网格高度的平滑过渡.当粘性网格的推进高度达到预定要求时,推进层方法自动停止,转而采用阵面推进方法生成常规意义的尽量接近正四面体的各向同性网格.同时给出了利用该方法生成的M6机翼非结构粘性网格来求解机翼粘性绕流的简单算例.

关键词: 非结构网格, 粘性网格, 推进层法, 阵面推进法

Abstract: A method for generating three-dimensional unstructured viscous grids automatically is presented. High-aspect-ratio and anisotropic tetrahedral grid cells are constructed in viscous dominated flow regions by advancing-layers method (ALM).When the height of viscous grids reaches the requirement,the conventional advancing-front method (AFM)will generate isotropic grids to fill the remained flow regions.By the control of stretched function and background information,the transition from grids generated by ALM to isotropic grids generated by AFM becomes smooth and gradual.The unstructured viscous grids of M6 wing and the simple flow results of corresponding Navier-Stokes solution based on the present grid are also provided.

Key words: unstructured grids, viscous grids, advancing-layers method, advancing-front method

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