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Titolo:
HYBRID PRISMATIC TETRAHEDRAL GRID GENERATION FOR VISCOUS-FLOW APPLICATIONS/
Autore:
SHAROV D; NAKAHASHI K;
Indirizzi:
FUJITSU LTD,MIHAMA KU,9-3 NAKASE 1 CHOME CHIBA 261 JAPAN TOHOKU UNIV,DEPT AERONAUT & SPACE ENGN SENDAI MIYAGI 98077 JAPAN
Titolo Testata:
AIAA journal
fascicolo: 2, volume: 36, anno: 1998,
pagine: 157 - 162
SICI:
0001-1452(1998)36:2<157:HPTGGF>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
DELAUNAY TRIANGULATION; BOUNDARY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
25
Recensione:
Indirizzi per estratti:
Citazione:
D. Sharov e K. Nakahashi, "HYBRID PRISMATIC TETRAHEDRAL GRID GENERATION FOR VISCOUS-FLOW APPLICATIONS/", AIAA journal, 36(2), 1998, pp. 157-162

Abstract

A method for the automatic generation of unstructured grids composed of tetrahedra and prisms is proposed. The prismatic semistructured grid is generated around viscous boundary surfaces and covers viscous regions, whereas the tetrahedral grid covers the rest of the computational domain. The Delaunay approach for tetrahedral grid generation is used. The proposed prismatic grid is structured in directions normal to the boundary faces, but the number of prisms generated from one boundary face is variable from face to face, Unlike conventional prismatic grid generators, this technique works well even in regions of cavities and gaps. The Delaunay background grid generated for surface nodes serves as an efficient data structure to check possible intersections of prisms. Particular attention is given to the boundary-constraining problem. A robust algorithm for the boundary recovery by edge swapping followed by a direct subdivision of tetrahedra is used, Grid examples forinternal and external flow problems of complex shapes demonstrate theefficiency of the method.

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Documento generato il 29/09/20 alle ore 04:21:05