A conservative overlap method for multi-block parallelization of compact finite-volume schemes

被引：8

作者：

Capuano, F. ^{[1
]}

Mastellone, A. ^{[2
]}

De Angelis, E. M. ^{[1
]}

机构：

[1] Univ Napoli Federico II, Dipartimento Ingn Ind, I-80125 Naples, Italy

[2] Ctr Italiano Ric Aerospaziali, I-81043 Capua, Italy

来源：

COMPUTERS & FLUIDS | 2017年 / 159卷

关键词：

Compact schemes; Finite-volume method; Local conservation; MPI Parallel computing; Turbulent flows; DIFFERENCE SCHEMES; COMPRESSIBLE FLOWS; SPIKE ALGORITHM; FILTERS; IMPLEMENTATION; SIMULATIONS; SYSTEMS; MESHES;

D O I：

10.1016/j.compfluid.2017.10.017

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A conservative approach for MPI-based parallelization of tridiagonal compact schemes is developed in the context of multi-block finite-volume methods. For each block, an enlarged linear system is solved by overlapping a certain number of neighbour cells from adjacent sub-domains. The values at block-to-block boundary faces are evaluated by a high-order centered approximation formula. Unlike previous methods, conservation is retained by properly re-computing the common interface value between two neighbouring blocks. Numerical tests show that parallelization artifacts decrease significantly as the number of overlapping cells is increased, at some expense of parallel efficiency. A reasonable trade-off between accuracy and performances is discussed in the paper with reference to both the spectral properties of the method and the results of fully turbulent numerical simulations. (c) 2017 Elsevier Ltd. All rights reserved.

引用

页码：327 / 337

页数：11

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