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.

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
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
Scramjet
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
Non HERDC
 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Created: Wed, 13 Feb 2013, 11:07:27 EST by Dr Vincent Wheatley on behalf of School of Mechanical and Mining Engineering