A general sub-domain boundary mapping procedure for structured grid CFD parallel computation

Baoyuan Wang, Ge Cheng Zha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

In the present work, a general sub-domain boundary mapping procedure has been developed for arbitrary topology multi-block structured grids with grid points matched on sub-domain boundaries. The interface of two adjacent blocks is uniquely defined according to each local meshing index system (MIS) which is specified independently. A pack/unpack procedure based on the definition of the interface is developed to exchange the data in ID array to minimize the communication amount. A safe send/receive procedure is built to remove the possibility of communication block and achieve an optimum parallel computation efficiency. The procedure is applied to parallelize an in house 3D Navier-Stokes code. The message passing interface (MPI) protocol is used for the data communication. The implementation of this newly developed parallelization procedure is straightforward. The programming work to convert a sequential code to parallel code using this procedure is minimal. The numerical experiments on an MPI based computer cluster show that the general mapping algorithm is robust and has high parallel computation efficiency.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 25th AIAA Applied Aerodynamics Conference, 2007
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages1774-1788
Number of pages15
ISBN (Print)1563478986, 9781563478987
DOIs
StatePublished - Jan 1 2007
Event25th AIAA Applied Aerodynamics Conference, 2007 - Miami, FL, United States
Duration: Jun 25 2007Jun 28 2007

Publication series

NameCollection of Technical Papers - AIAA Applied Aerodynamics Conference
Volume3
ISSN (Print)1048-5953

Other

Other25th AIAA Applied Aerodynamics Conference, 2007
CountryUnited States
CityMiami, FL
Period6/25/076/28/07

ASJC Scopus subject areas

  • Engineering(all)

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    Wang, B., & Zha, G. C. (2007). A general sub-domain boundary mapping procedure for structured grid CFD parallel computation. In Collection of Technical Papers - 25th AIAA Applied Aerodynamics Conference, 2007 (pp. 1774-1788). (Collection of Technical Papers - AIAA Applied Aerodynamics Conference; Vol. 3). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2007-4432