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Parallel local remeshing for moving body applications

Chen, Jianjun, Shaolei Li, Jianjing Zheng, Yao Zheng

24th International Meshing Roundtable, Elsevier Ltd., pp.Research Note, October 12-14 2015

IMR
PROCEEDINGS

24th International Meshing Roundtable
Austin, TX
October 12-14,2014

Center for Engineering and Scientific Computation, Zhejiang University, Hangzhou 310027, China
Email: chenjj@zju.edu.cn

Abstract
This paper presents a parallel local remeshing approach on distributed parallel computers based on the message passing interfaces (MPI). In comparison to those existing approaches that require combining a single hole initially spanning multiple processors into one processor so that the sequential results can be reproduced, the proposed approach avoids this limit by decomposing the initially distributed holes into many sub-holes and distributing them evenly on the involved computer cores. The employed domain decomposition approach can ensure the generation of a well-shaped inter-hole boundary always. Therefore, the subsequent remeshing step can fix the inter-hole boundary without compromising the quality of elements around this boundary. In the mean time, because the remeshing procedure involves no communications, its parallel efficiency is very high. An application of the remeshing algorithms in a benchmark store separation simulation demonstrates the capabilities of the approach.

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