Thermal non-equilibrium effects in radical farming scramjets

Gehre, Rolf M., Wheatley, Vincent and Boyce, Russell R. (2012). Thermal non-equilibrium effects in radical farming scramjets. In: I. Grant, ICAS 2012 CD-ROM Proceedings. 28th International Congress of the Aeronautical Sciences (ICAS 2012), Brisbane, Australia, (1-9). 23 - 28 September 2012.

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Name Description MIMEType Size Downloads
Author Gehre, Rolf M.
Wheatley, Vincent
Boyce, Russell R.
Title of paper Thermal non-equilibrium effects in radical farming scramjets
Conference name 28th International Congress of the Aeronautical Sciences (ICAS 2012)
Conference location Brisbane, Australia
Conference dates 23 - 28 September 2012
Proceedings title ICAS 2012 CD-ROM Proceedings
Place of Publication United Kingdom
Publisher International Council of the Aeronautical Sciences (ICAS)
Publication Year 2012
Sub-type Fully published paper
ISBN 9780956533319
Editor I. Grant
Start page 1
End page 9
Total pages 9
Collection year 2013
Language eng
Abstract/Summary To analyze the effect of thermal non-equilibrium on radical farming scramjets, Reynolds-averaged Navier-Stokes (RANS) simulations have been performed. The investigation focuses on the potential combustion processes originating from hot regions within the combustor (hot pockets). To investigate thermal non-equilibrium effects independently from the injection method and the fuel type, a 5 species air model is used for the simulations and the effective temperature is employed as a qualitative measure for the combustion potential. The effect of shock-tunnel-testing is of particular interest. Therefore, a Mach 6 shock tunnel nozzle and a radical farming scramjet model have been simulated for an enthalpy condition of 4.17MJ/kg. Performing thermal equilibrium and non-equilibrium simulations for both the nozzle and scramjet, shows the effects of thermal non-equilibrium. For thermal equilibrium simulations, the effective temperatures in the hot pocket regions are higher than for thermal non-equilibrium simulations, indicating increased combustion potential for shock tunnel experiments.
Keyword Thermal non-equilibrium
Hypersonic flow
Computational fluid dynamics
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Mechanical & Mining Engineering Publications
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Created: Wed, 13 Feb 2013, 11:07:27 EST by Dr Vincent Wheatley on behalf of School of Mechanical and Mining Engineering