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An experimental study of the near wake of a two-dimensional hypersonic blunt body with mass addition

Collins, Donald J. and Lees, Lester and Roshko, Anatol (1969) An experimental study of the near wake of a two-dimensional hypersonic blunt body with mass addition. In: AIAA 7th Aerospace Sciences Meeting, January 20-22, 1969, New York, NY. http://resolver.caltech.edu/CaltechAUTHORS:20141210-132533513

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Abstract

An experimental investigation of the steady, laminar near-wake flow field of a two-dimensional, adiabatic, circular cylinder with surface mass transfer has been made at a free-stream Mach number of 6.0. The pressure and mass-concentration fields associated with the transfer of argon, nitrogen or helium into the near wake were studied for mass transfer from the forward stagnation region, and from the base. For sufficiently low mass transfer rates from the base, for which a recirculating zone exists, the entire near-wake flow field correlates with the momentum flux, not the mass flux, of the injectant, and the mass-concentration field is determined by counter-current diffusion into the reversed flow. For mass addition from the forward stagnation region, the pressure field is undisturbed and the mass-concentration field is nearly uniform in the region of reversed flow. The axial decay of argon mass concentration in the intermediate wake, downstream of the neck, is explained with the aid of an integral solution in the incompressible plane, from which the location of the virtual origin for the asymptotic far-wake solution has been derived as one result.


Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.2514/6.1969-67DOIArticle
http://arc.aiaa.org/doi/abs/10.2514/6.1969-67PublisherArticle
Additional Information:© 1969 AIAA. Work supported by A. R. O. and A. R. P. A. under Contract DA-31-124-ARO(D)-33.
Group:GALCIT
Funders:
Funding AgencyGrant Number
Army Research Office (ARO)DA-31-124-ARO(D)-33
Advanced Research Projects Agency (ARPA)UNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper69-67
Record Number:CaltechAUTHORS:20141210-132533513
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141210-132533513
Official Citation:An experimental study of the near wake of a two-dimensional hypersonic blunt body with mass addition D. COLLINS, L. LEES, and A. ROSHKO 7th Aerospace Sciences Meeting. January 1969
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:52556
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:10 Dec 2014 22:00
Last Modified:20 Sep 2016 20:45

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