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Titolo:
A PARAMETRIC STUDY OF MACH REFLECTION IN STEADY FLOWS
Autore:
LI H; BENDOR G;
Indirizzi:
BEN GURION UNIV NEGEV,DEPT MECH ENGN,PEARLSTONE CTR AERONAUT ENGN STUDIES IL-84105 BEER SHEVA ISRAEL
Titolo Testata:
Journal of Fluid Mechanics
, volume: 341, anno: 1997,
pagine: 101 - 125
SICI:
0022-1120(1997)341:<101:APSOMR>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
SHOCK-WAVE REFLECTIONS; TRANSITION; RECONSIDERATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
H. Li e G. Bendor, "A PARAMETRIC STUDY OF MACH REFLECTION IN STEADY FLOWS", Journal of Fluid Mechanics, 341, 1997, pp. 101-125

Abstract

The flow fields associated with Mach reflection wave configurations in steady flows are analysed, and an analytical model for predicting the wave configurations is proposed. It is found that provided the flow field is free of far-field downstream influences, the Mach stem heights are solely determined by the set-up geometry for given incoming-flowMach numbers. It is shown that the point at which the Mach stem height equals zero is exactly at the von Neumann transition. For some parameters, the flow becomes choked before the Mach stem height approaches zero. It is suggested that the existence of a Mach reflection not onlydepends on the strength and the orientation of the incident shock wave, as prevails in von Neumann's three-shock theory, but also on the set-up geometry to which the Mach reflection wave configuration is attached. The parameter domain, beyond which the flow gets choked and hencea Mach reflection cannot be established, is calculated. Predictions based on the present model are found to agree well both with experimental and numerical results.

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Documento generato il 27/11/20 alle ore 07:35:11