二维非结构网格生成及Euler方程计算的方法研究  

INVESTIGATION ON GENERATION OF 2D UNSTRUCTURED GRIDS AND EULER EQUATIONS SOLUTION

作　　者：叶正寅[1] 杨永年 钟诚文 张仲寅[2] 陈迎春[3] 

机构地区：[1]中科院应用数学研究所,100080 [2]西北工业大学飞机系,西安710072 [3]航空工业总公司第603所,西安710089

出　　处：《计算物理》1999年第6期669-674,共6页Chinese Journal of Computational Physics

摘　　要：用离翼型表面最小距离作为阵面推进法中的参数选择依据，生成二维问题的非结构网格。这种方法抛弃了传统的背景网格观念，直接提供网格生成过程中所需的背景信息。在求解Ｅｕｌｅｒ 方程时，用格心格式的有限体积法作空间离散，用四步ＲｕｎｇｅＫｕｔｔａ 方法作时间推进，采用不同的加速收敛措施获得定常流动。提出了两种边界条件的构造办法，并讨论了不同边界条件对结果的影响。It focuses on an approach to generating 2D unstructured grids for the solution of Euler equations.Unlike the generation of unstructured grids before with background grids,the background information needed in Avancing Front Method is obtained directly with the distance to the airfoil surface.In solving the Euler equations,the cell centered finite volume method is used for space discretization,and four step Runge Kutta method is adopted for time marching.Two kinds of boundary condition are presented and three kinds of boundary conditions are applied and analyzed.The calculated results are given and discussed.

关 键 词：非结构网格 有限体积法 EULER方程 网格背景信息 

分 类 号：O35[理学—流体力学] V211.3[理学—力学]