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Titolo:
Numerical analysis of scramjet internal flow by hybrid unstructured grid method
Autore:
Kodera, M; Igarashi, Y; Nakahashi, K; Kanda, T; Hiraiwa, T; Mitani, T;
Indirizzi:
Natl Aerosp Lab, Kakuda Res Ctr, Ramjet Propuls Res Div, Kakuda, Miyagi 9811525, Japan Natl Aerosp Lab Kakuda Miyagi Japan 9811525 Kakuda, Miyagi 9811525, Japan Kawasaki Heavy Ind Ltd, Akashi, Hyogo 6738666, Japan Kawasaki Heavy Ind Ltd Akashi Hyogo Japan 6738666 i, Hyogo 6738666, Japan Tohoku Univ, Dept Aeronaut & Space Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan Tohoku Univ Sendai Miyagi Japan 9808579 Ku, Sendai, Miyagi 9808579, Japan
Titolo Testata:
JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING
fascicolo: 3, volume: 43, anno: 2000,
pagine: 407 - 413
SICI:
1340-8054(200008)43:3<407:NAOSIF>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Keywords:
numerical analysis; supersonic flow; internal flow; propulsion; hybrid unstructured grid method; scramjet engine;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Kodera, M Natl Aerosp Lab, Kakuda Res Ctr, Ramjet Propuls Res Div, 1 Koganezawa, Kakuda, Miyagi 9811525, Japan Natl Aerosp Lab 1 Koganezawa Kakuda Miyagi Japan 9811525 , Japan
Citazione:
M. Kodera et al., "Numerical analysis of scramjet internal flow by hybrid unstructured grid method", JSME I J B, 43(3), 2000, pp. 407-413

Abstract

Computations of internal viscous flowfields of scramjet models were conducted at inflow Mach numbers of 3.4 and 5.45. A hybrid unstructured grid method was used to compute the scramjet models with and without a short strut. The numerical method to solve the Navier-Stokes equations on the hybrid unstructured grid was developed using a finite volume cell vertex scheme and the lower-upper symmetric Gauss-Seidel (LU-SGS) implicit time integration algorithm. The computational results revealed that a thick subsonic region did not exist in the combustor near the top wall at Mach number 5.45. It was a desirable feature to avoid unstarting the engine. With the use of a strut, the relatively low velocity regions increased and the downward flow toward the cowl behind the step became strong. An overconcentration of fuel toward the top wall during weak combustion was observed in the experiment. The reason for this was that the airflow near the injector was turned to the top wall due to the small influence of combustion in the experiment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 10:44:53