Parallel performance of overlapping mesh technique for compressible flows

J. Rokicki; J. Zółtak; D. Drikakis; J. Majewski

doi:10.1016/S0167-739X(00)00071-6

Parallel performance of overlapping mesh technique for compressible flows

J. Rokicki, J. Zółtak, D. Drikakis, J. Majewski

Department of Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The paper presents parallelization of a blended-function-based overlapping mesh technique and its implementation in the case of inviscid compressible flows around complex geometries. The overlapping grid technique is based on the partition of the domain into overlapping subdomain. The solution in each subdomain is obtained by an implicit algorithm and a characteristics-based method, while the blended functions are implemented in order to allow the accurate interpolation of the boundary conditions in the case of multiple overlaps. The above are applied to flows around multi-element airfoil geometries and results from parallel computations on CRAY Server CS6400 and CRAY T3E computing platforms are presented. The load-balancing and parallel performance issues are investigated for several grid systems. A simple model has also been developed for describing the parallel efficiency of the simulations and it is shown that the model results agree well with the parallel experiments.

Original language	English
Pages (from-to)	3-15
Number of pages	13
Journal	Future Generation Computer Systems
Volume	18
Issue number	1
DOIs	https://doi.org/10.1016/S0167-739X(00)00071-6
Publication status	Published - Sept 2001

Keywords

Compressible flows
Overlapping meshes
Parallel computations

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10.1016/S0167-739X(00)00071-6

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title = "Parallel performance of overlapping mesh technique for compressible flows",

abstract = "The paper presents parallelization of a blended-function-based overlapping mesh technique and its implementation in the case of inviscid compressible flows around complex geometries. The overlapping grid technique is based on the partition of the domain into overlapping subdomain. The solution in each subdomain is obtained by an implicit algorithm and a characteristics-based method, while the blended functions are implemented in order to allow the accurate interpolation of the boundary conditions in the case of multiple overlaps. The above are applied to flows around multi-element airfoil geometries and results from parallel computations on CRAY Server CS6400 and CRAY T3E computing platforms are presented. The load-balancing and parallel performance issues are investigated for several grid systems. A simple model has also been developed for describing the parallel efficiency of the simulations and it is shown that the model results agree well with the parallel experiments.",

keywords = "Compressible flows, Overlapping meshes, Parallel computations",

author = "J. Rokicki and J. Z{\'o}{\l}tak and D. Drikakis and J. Majewski",

note = "Funding Information: This work has been supported by the KBN Grants 7 T07A 022 14 and 9 T12C 069 14. A substantial part of the work was performed when Jacek Rokicki was staying at the Zentrum f{\"u}r Hochleistungsrechnen of TU-Dresden, whose hospitality is kindly acknowledged. Performance tests were run on the CRAY T3E at ZHR, TU-Dresden. Copyright: Copyright 2007 Elsevier B.V., All rights reserved.",

year = "2001",

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doi = "10.1016/S0167-739X(00)00071-6",

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AU - Zółtak, J.

AU - Drikakis, D.

AU - Majewski, J.

N1 - Funding Information: This work has been supported by the KBN Grants 7 T07A 022 14 and 9 T12C 069 14. A substantial part of the work was performed when Jacek Rokicki was staying at the Zentrum für Hochleistungsrechnen of TU-Dresden, whose hospitality is kindly acknowledged. Performance tests were run on the CRAY T3E at ZHR, TU-Dresden. Copyright: Copyright 2007 Elsevier B.V., All rights reserved.

PY - 2001/9

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N2 - The paper presents parallelization of a blended-function-based overlapping mesh technique and its implementation in the case of inviscid compressible flows around complex geometries. The overlapping grid technique is based on the partition of the domain into overlapping subdomain. The solution in each subdomain is obtained by an implicit algorithm and a characteristics-based method, while the blended functions are implemented in order to allow the accurate interpolation of the boundary conditions in the case of multiple overlaps. The above are applied to flows around multi-element airfoil geometries and results from parallel computations on CRAY Server CS6400 and CRAY T3E computing platforms are presented. The load-balancing and parallel performance issues are investigated for several grid systems. A simple model has also been developed for describing the parallel efficiency of the simulations and it is shown that the model results agree well with the parallel experiments.

AB - The paper presents parallelization of a blended-function-based overlapping mesh technique and its implementation in the case of inviscid compressible flows around complex geometries. The overlapping grid technique is based on the partition of the domain into overlapping subdomain. The solution in each subdomain is obtained by an implicit algorithm and a characteristics-based method, while the blended functions are implemented in order to allow the accurate interpolation of the boundary conditions in the case of multiple overlaps. The above are applied to flows around multi-element airfoil geometries and results from parallel computations on CRAY Server CS6400 and CRAY T3E computing platforms are presented. The load-balancing and parallel performance issues are investigated for several grid systems. A simple model has also been developed for describing the parallel efficiency of the simulations and it is shown that the model results agree well with the parallel experiments.

KW - Compressible flows

KW - Overlapping meshes

KW - Parallel computations

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JO - Future Generation Computer Systems

JF - Future Generation Computer Systems

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Parallel performance of overlapping mesh technique for compressible flows

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Keywords

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