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Parallel 2D/3D Unsteady Incompressible Viscous Flow Computations Using an Unstructured CFD Code

机译:并行2D / 3D不稳定的不可抑制粘性流量计算使用非结构化的CFD代码

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This paper presents a cell-centered pressure-based CFD method implemented in the parallel unstructured code UNCLE. The code is a two/three-dimensional finite volume unsteady incompressible Navier-Stokes solver based on the SIMPLE algorithm with second order accuracy in both time and space. UNCLE can use a variety of grid types, such as triangular, quadrilateral, tetrahedral, prisms, and hexahedral meshes, generating essentially identical solutions for different mesh types. UNCLE makes use of METIS for domain decomposition. The key features of METIS include extremely fast partition, high quality partitions, and low fill orderings. Our test results using METIS in UNCLE exhibit excellent load balance in two/three-dimensional grids with various types of meshes, where the average load balance is up to 97% for all our test cases.
机译:本文介绍了在并联非结构化代码叔叔中实现的基于细胞的基于压力的CFD方法。代码是基于Simply算法的两个/三维有限音量不稳定的Navier-Stokes求解器,其时间和空间中的二阶精度。叔叔可以使用各种网格类型,例如三角形,四边形,四面体,棱镜和六面向网格,为不同的网格类型产生基本相同的解决方案。叔叔利用Metis进行域分解。 Metis的关键特征包括极快的分区,高质量分区和低填充排序。我们在叔叔中使用Metis的测试结果在两个/三维网格中使用各种类型的网格表现出优异的负载平衡,所有类型的载荷均衡均高达97%,所有测试用例高达97%。

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