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Titolo: SPACEMARCHING METHOD ON UNSTRUCTURED GRID FOR SUPERSONIC FLOWS WITH EMBEDDED SUBSONIC REGIONS
Autore: NAKAHASHI K; SAITOH E;
 Indirizzi:
 TOHOKU UNIV,DEPT AERONAUT & SPACE ENGN SENDAI MIYAGI 98077 JAPAN
 Titolo Testata:
 AIAA journal
fascicolo: 8,
volume: 35,
anno: 1997,
pagine: 1280  1285
 SICI:
 00011452(1997)35:8<1280:SMOUGF>2.0.ZU;2M
 Fonte:
 ISI
 Lingua:
 ENG
 Tipo documento:
 Article
 Natura:
 Periodico
 Settore Disciplinare:
 Science Citation Index Expanded
 Citazioni:
 10
 Recensione:
 Indirizzi per estratti:



 Citazione:
 K. Nakahashi e E. Saitoh, "SPACEMARCHING METHOD ON UNSTRUCTURED GRID FOR SUPERSONIC FLOWS WITH EMBEDDED SUBSONIC REGIONS", AIAA journal, 35(8), 1997, pp. 12801285
Abstract
A spacemarching algorithm on an unstructured grid to solve supersonic flows that may contain embedded subsonic regions is proposed. The method employs a domainmarching algorithm in which a bandlike computational subdomain is marched in the hyperbolic direction starting from the upstream boundary of the flowfield. A masking procedure is employed where the outside of the selected domain is masked during the flux computations to minimize the overall arithmetic operations. The unmasked domain is integrated in time to get a locally converged solution. If embedded subsonic regions are present, the unmasked region is enlarged to cover the entire subsonic regions surrounded by supersonic points. The method is applied to calculations of a fully supersonic flow in a scramjet and a supersonic flow with embedded subsonic regions around abluntnose body. It is demonstrated that the computational work can be reduced by as much as a factor of 10 as compared to conventional, timemarching unstructured grid methods.
ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 04:02:08