A MULTIGRID COMPUTATION OF INCOMPRESSIBLE FLOW IN COMPLEX GEOMETRIES

Hou Lingyun; Yan Chuanjun

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A MULTIGRID COMPUTATION OF INCOMPRESSIBLE FLOW IN COMPLEX GEOMETRIES

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- A MULTIGRID COMPUTATION OF INCOMPRESSIBLE FLOW IN COMPLEX GEOMETRIES
- Vol. 13, Issue 3, (1998)
- 作者机构：
  
  西北工业大学
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1998
- 稿件说明：
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Hou Lingyun, Yan Chuanjun. A MULTIGRID COMPUTATION OF INCOMPRESSIBLE FLOW IN COMPLEX GEOMETRIES[J]. 1998, 13(3).
DOI：

Hou Lingyun, Yan Chuanjun. A MULTIGRID COMPUTATION OF INCOMPRESSIBLE FLOW IN COMPLEX GEOMETRIES[J]. 1998, 13(3). DOI：

摘要

本文首次将多重网格中的全近似格式FAS用到一般曲线坐标系下交错网格布局的SIM-PLEC算法中，采用三个流动结构：渐扩平面通道、收扩管流和轴对称弯曲管流作为算例，通过与单网格在不同Re数、不同网格点数和不同几何结构上的迭代性能的对比，证明多重网格克服了曲线坐标系下单网格SIMPLEC算法的不足，大大提高收敛速度，节省CPU时间。

Abstract

A procedure using a Full Approximate Scheme (FAS) multigrid is developed in SIMPLEC algorithm with a layout of staggered grid in generalized curvilinear coordinates.This method is applied to three flow problems as test tasks.The comparison between the iteration performance of the Multi-Grid (MG) and Single-Grid (SG) methods in different grid sizes

Reynolds number and geometries demonstrates that the multigrid method improves convergence rate

reduces CPU time

and overcomes the deficiency of single-grid SIMPLEC algorithm in generalized curvilinear coordinates.

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