摘要
用一种双边界代数方法生成二维网格 ,通过在超限插值函数中引入边界的一阶导数实现网格与边界的正交 ,采用几何一致性条件保证物理区域不变形 ,发展一系列拉伸方程控制网格在边界或给定位置的间距。应用此方法生成了满意的喷管内流场网格 ,网格生成效率明显优于微分方程网格生成方法。
A two-boundary algebraic method was developed to generate 2-D grid system within geometrically complex 2-D plane domain. The orthogonality near boundaries can be realized by introducing the first-order derivatives of the boundary curves into the transfinite interpolation function. In order to prevent the deformation of the physical domain, the geometrical consistency conditions were used. In addition, a set of stretching functions was derived to adjust the space at the desired location. The usefulness of the method developed was demonstrated by using it to generate a satisfying grid system for nozzle interior field, and its effectiveness is significantly better than that of the differential equation method.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2001年第1期30-32,39,共4页
Journal of Propulsion Technology
关键词
双边界代数法
网格生成
二维网格
贴体网格
喷管内流场
Algebra
Deformation
Derivatives
Differential equations
Functions
Geometry
Heat transfer
Interpolation
Nozzles
