On the existence of a threshold value of the plate bluntness in the interference of an oblique shock with boundary and entropy layers

Autor:	V. Ya. Borovoy, A. S. Skuratov, I. V. Struminskaya
Rok vydání:	2008
Předmět:	Fluid Flow and Transfer Processes Physics Threshold limit value Mechanical Engineering General Physics and Astronomy Thermodynamics Reynolds number Observable Mechanics Heat transfer coefficient symbols.namesake Mach number Heat transfer symbols Laminar-turbulent transition Oblique shock
Zdroj:	Fluid Dynamics. 43:369-379
ISSN:	1573-8507 0015-4628
DOI:	10.1134/s0015462808030058
Popis:	The heat transfer to sharp and slightly blunted flat plates in the zone of oblique shock incidence has been experimentally investigated. The experiments were performed at the Mach numbers M = 6, 8, and 10 and Reynolds numbers ranging from 0.2 × 106 to 1.3 × 106 corresponding to transitional (laminar-turbulent) flow in the shock-induced separation zone. Emphasis is placed on small values of the bluntness radius r. It is established that there exists a threshold value r th of the radius that bounds the range of its influence on the heat transfer, namely, an increase in r to r th leads to a sharp reduction in the maximum heat transfer coefficient in the interference zone, whereas a further increase (beyond r th) has only a slight effect on the maximum heat transfer coefficient. The dependence of r th on the main hypersonic flow parameters is analyzed. an explanation of the observable phenomena is given.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5ebf8ef78302c106f529facb8036397e https://doi.org/10.1134/s0015462808030058 Zobrazit plný text záznamu Plný text ve formátu PDF