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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:20120807-150911923

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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
http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=372351PublisherUNSPECIFIED
Additional Information:© 1972 Cambridge University Press. Received 23 October 1971. Published online: 29 March 2006. 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:20120807-150911923
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120807-150911923
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:32992
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:07 Aug 2012 22:28
Last Modified:26 Dec 2012 15:52

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