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Progress toward shock enhancement of supersonic combustion processes

Marble, Frank E. and Hendricks, Gavin J. and Zukoski, Edward E. (1987) Progress toward shock enhancement of supersonic combustion processes. AIAA Papers, AIAA-87-1880 . American Institute of Aeronautics and Astronautics .

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In air breathing propulsion systems for flight at Mach numbers 7 to 20, it is generally accepted that the combustion processes will be carried out at supersonic velocities with respect to the engine. The resulting brief residence time places a premium on rapid mixing of the fuel and air. To address this issue we &re investigating a mechanism for enhancing the rate of mixing between air and hydrogen fuel over rates that are expected in shear layers and jets. The mechanism rests upon the strong vorticity induced at the interface between a light and heavy gas by an intense pressure gradient. The specific phenomenon under investigation is the rapid mixing induced by interaction of a weak oblique shock with a cylindrical jet of hydrogen embedded in air. The status of our investigations is described in three parts: a) shock tube investigation of the distortion and mixing induced by shock waves impinging on cylindric of hydrogen embedded in air, b) the molecular mixing and chemical reaction in large vortices, periodically formed in a channel, and c) two-dimensional non-steady and three-dimensional steady numerical studies of shock interaction with cylindrical volumes of hydrogen in air.

Item Type:Report or Paper (Report)
Additional Information:© 1987, AIAA.
Group:Guggenheim Jet Propulsion Center
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Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion Center295
Series Name:AIAA Papers
Issue or Number:AIAA-87-1880
Record Number:CaltechAUTHORS:20101201-110408219
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Official Citation:Progress toward shock enhancement of supersonic combustion processes MARBLE, FRANK E., CaliforniaInstitute of Technology, Pasadena; HENDRICKES, GAVIN J., CaliforniaInstitute of Technology, Pasadena; ZUKOSKI, EDWARD E., California Institute of Technology, Pasadena AIAA-1987-1880 SAE, ASME, and ASEE, Joint Propulsion Conference, 23rd, San Diego, CA, June 29-July 2, 1987
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21097
Deposited By: Ruth Sustaita
Deposited On:04 Dec 2010 00:41
Last Modified:03 Oct 2019 02:19

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