摘要
本文应用空间理想非均匀线性弹性线力学平衡关系生成三维贴体与边界正交网格。通过弹性线的刚度来控制网格的密度,并且自动调整边界节点上外力分布使网格线与边界正交。文中还用欧拉方程有限体积法三步显式时间推进及焓修正方法求解了绕三角翼的大迎角流动。计算结果表明这种方法能够较好模拟跨声速脱体涡流动。
Three-dimensional body-fitted grids perpendicular to the boundary are generated in this paper by applying equilibrium relation of forces acting on the ideal non-uniform linear elastic lines. The mesh density is controlled by adjusting the stiffnesses of the elastic lines,and the grid lines are made perpendicular to the boundary by automatic selection of the force distribution at the boundary nodes.Flows around delta wing at high angles of attack are solved by using finite volume method of Euler equations through three-stage explicit time stepping and enthalpy correction method.
出处
《空气动力学学报》
CSCD
北大核心
1993年第4期451-456,共6页
Acta Aerodynamica Sinica
关键词
网格生成
涡流
有限体积法
三角翼
grid generation, vortex flow, finite volume method, delta wing.
