Active-domain marching for efficient high speed flow computations

Kazuhiro Nakahashi, Eiji Saitoh, Dmitri Sharov

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

1 Citation (Scopus)

Abstract

A three-dimensional space-marching algorithm on unstructured grid to solve supersonic flows that may contain embedded subsonic regions is proposed. The method employs a domain-marching algorithm in which a computational domain, named active domain, is marched in the hyperbolic direction starting from the upstream boundary of the flow field. A masking procedure is employed to exclude nonactive areas during the flux computations to minimize overall arithmetic operations. The unmasked, active domain is integrated in time to get a locally converged solution. If embedded subsonic regions are present, the active domain is enlarged to cover the whole subsonic regions by supersonic points. The method was applied to compute three-dimensional internal and external flows with and without embedded subsonic region. It is demonstrated that the computational work can be significantly reduced by the present method as compared to conventional, time-marching unstructured grid methods.

Original languageEnglish
Title of host publication14th Applied Aerodynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Pages531-540
Number of pages10
ISBN (Print)9781563472121
DOIs
Publication statusPublished - 1996
Event14th Applied Aerodynamics Conference, 1996 - New Orleans, United States
Duration: 1996 Jun 171996 Jun 20

Publication series

Name14th Applied Aerodynamics Conference

Other

Other14th Applied Aerodynamics Conference, 1996
CountryUnited States
CityNew Orleans
Period96/6/1796/6/20

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Nakahashi, K., Saitoh, E., & Sharov, D. (1996). Active-domain marching for efficient high speed flow computations. In 14th Applied Aerodynamics Conference (pp. 531-540). [AIAA-96-2443] (14th Applied Aerodynamics Conference). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.1996-2443