文章基本信息

标题：一般化座標 Staggered Grid 系での流れ問題解析について (II)
本地全文：下载
作者：武本行正 ; 小畑繁樹 ; 中村佳朗等
期刊名称：四日市大学論集
印刷版ISSN：1340-5543
电子版ISSN：2433-4685
出版年度：1993
卷号：6
期号：2
页码：41-52
DOI：10.24584/jyu.6.2_41
出版社：四日市大学
摘要：Recently, finite-difference schemes for solving the incompressible Navier-Stokes equations involving various kinds of boundary conditions have focused on improving their accuracy, stability and efficiency. A computer program for solving two-dimensional, time-dependent, incompressible viscous flows using the staggered grid in generalized coordinates named GGSTAG2D is developed by using a new formulation better than the former one (see the previous paper (I)). The 2D momentum equations of Navier-Stokes equations for the contravariant velocity components and Poisson equation for pressure are solved by applying a SMAC like time-marching scheme. The spurious errors and the numerical instabilities can be suppressed by employing the staggered grid system and QUICK upwind control volume scheme in generalized coordinates. Some numerical results of 2D square cavity flows are shown to demonstrate the reliability and robustness of the present scheme. We also show the same computation in the regular grid system, but it has more computational time and causes spurious oscillation of pressure values when it is applied to complex flow fields.