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Non-equilibrium dissociating nitrogen flow over spheres and circular cylinders

Hornung, H. G. (1972) Non-equilibrium dissociating nitrogen flow over spheres and circular cylinders. Journal of Fluid Mechanics, 53 (1). pp. 149-176. ISSN 0022-1120. http://resolver.caltech.edu/CaltechAUTHORS:HORjfm72b

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Abstract

Theoretical results based on the methods of Freeman and Garr & Marrone show that the stand-off distance and flow pattern of non-equilibrium dissociating flow of nitrogen over the front part of a blunt body can be correlated in terms of a single reaction rate parameter ω taking account of parameters describing the speed, density, dissociation and temperature of the free stream. The density pattern, which is sensitive to the reaction rate, consists of two distinct regions dominated by the effects of reaction and pressure respectively. The shape and size of these regions depend on Q. Experimental results obtained by optical interferometry in a free-piston shock tunnel confirm the theoretical results. A scale effect consistent with the induction time phenomenon suggested by Shui, Appleton & Keck modifies the theoretical results considerably in the case of small models.


Item Type:Article
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http://dx.doi.org/10.1017/S0022112072000084DOIUNSPECIFIED
Additional Information:Copyright © 1972 Cambridge University Press. Reprinted with permission. (Received 23 October 1971) The construction and maintenance of the shock tunnel used in the above experiments was financed by a grant from the Australian Research Grants Committee, whose support is gratefully acknowledged. I would also like to thank Mr R. French for his technical advice and assistance.
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Australian Research Grants CommitteeUNSPECIFIED
Record Number:CaltechAUTHORS:HORjfm72b
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:HORjfm72b
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ID Code:12586
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Deposited On:13 Dec 2008 04:17
Last Modified:26 Dec 2012 10:36

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