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Grid generation and flow solution method for Euler equations on unstructured grids

机译:非结构网格上欧拉方程的网格生成和流动求解方法

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摘要

A grid generation and flow solution algorithm for the Euler equations on unstructured grids is presented. The grid generation scheme, which uses Delaunay triangulation, generates the field points for the mesh based on cell aspect ratios and allows clustering of grid points near solid surfaces. The flow solution method is an implicit algorithm in which the linear set of equations arising at each time step is solved using a Gauss-Seidel procedure that is completely vectorizable. Also, a study is conducted to examine the number of subiterations required for good convergence of the overall algorithm. Grid generation results are shown in two dimensions for an NACA 0012 airfoil as well as a two element configuration. Flow solution results are shown for a two dimensional flow over the NACA 0012 airfoil and for a two element configuration in which the solution was obtained through an adaptation procedure and compared with an exact solution. Preliminary three dimensional results also are shown in which the subsonic flow over a business jet is computed.
机译:提出了非结构网格上欧拉方程的网格生成和流动求解算法。使用Delaunay三角剖分的网格生成方案可基于像元长宽比生成网格的场点,并允许在实体表面附近对网格点进行聚类。流量解法是一种隐式算法,其中使用完全可矢量化的高斯-赛德尔程序求解每个时间步长处的线性方程组。此外,进行了一项研究,以检查总体算法良好收敛所需的子迭代次数。二维NACA 0012机翼的网格生成结果以及两个元素的配置。显示了在NACA 0012机翼上的二维流动以及两元构型的流动解结果,其中通过适应程序获得了解并将其与精确解进行了比较。还显示了初步的三维结果,其中计算了公务机上的亚音速流。

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  • 作者

    Anderson, W. Kyle;

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  • 年度 1992
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  • 原文格式 PDF
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