Self ignition of hydrogen-air mixtures with inclined porthole injection in supersonic flows

Kirchhartz, Rainer M., Paull, Allan, Mee, David J. and Olivier, Herbert (2010) Self ignition of hydrogen-air mixtures with inclined porthole injection in supersonic flows. International Journal of Hypersonics, 1 4: 199-208. doi:10.1260/1759-3107.1.4.199


Author Kirchhartz, Rainer M.
Paull, Allan
Mee, David J.
Olivier, Herbert
Title Self ignition of hydrogen-air mixtures with inclined porthole injection in supersonic flows
Journal name International Journal of Hypersonics   Check publisher's open access policy
ISSN 1759-3107
1759-3107
Publication date 2010-12-01
Year available 2012
Sub-type Article (original research)
DOI 10.1260/1759-3107.1.4.199
Volume 1
Issue 4
Start page 199
End page 208
Total pages 10
Place of publication Essex, United Kingdom
Publisher Multi-Science Publishing
Language eng
Abstract Experiments were performed in the T4 shock tunnel to investigate the self ignition of hydrogen in a supersonic air stream. Hydrogen was injected into the flow over an inclined flat plate for oncoming Mach numbers of 7.9 to 8.0. The nozzle-supply enthalpy was kept between 3.1 and 3.4 MJ/kg and two different pressure levels were used in the tests. Measurements of surface pressures were used to infer the location of ignition but only small pressure increases were obtained when combustion occurred. Therefore multiple tests at nominally the same condition were used so that statistical methods could be used to identify the ignition lengths. The ignition lengths of the hydrogen air mixture directly behind a strong leading edge shock indicate that Pergament's method is able to predict the ignition length to within 35% for the observed autoignition over the range of conditions tested.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
ERA 2012 Admin Only
 
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Created: Wed, 08 Feb 2012, 00:23:24 EST by David J Mee on behalf of School of Mechanical and Mining Engineering