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Chemical structure of a methane CDF



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Available online at www sciencedirect com Proceedings of the Proceedings of the Combustion Institute 32 2009 1319 1326 Combustion Institute www elsevier com locate proci Chemical structure of a methane counter ow di usion ame perturbed with the addition of either JP 8 or a jet fuel surrogate Luca Tosatto Barbara La Mantia 1 Hugo Bu erand Patrick Duchaine 2 Alessandro Gomez Department of Mechanical Engineering Yale Center for Combustion Studies Yale University P O Box 208286 New Haven CT 06520 8286 USA Abstract The chemical structure of a methane counter ow di usion ame doped with small amounts of either JP8 or a jet fuel surrogate was analyzed by gas sampling via quartz microprobes and subsequent GC MS analysis This jet fuel initial oxidation is consistent with the anticipated chemical kinetic behavior based on thermal decomposition of large alkanes to smaller and smaller fragments and the survival of ring stabilized aromatics at higher temperatures The surrogate captures the general trend but incorrectly mimics the behavior of some species such as benzene and ethylene Furthermore the comparison in the behavior of large alkanes is only qualitative because of di culties in separating the components of JP 8 as a result of isomerism 2009 Published by Elsevier Inc on behalf of The Combustion Institute Keywords Di usion ames Counter ow Surrogate Jet fuel JP 8 1 Introduction With world events imposing enhanced exibility in the sources of jet fuels it is becoming increasingly important to improve scienti c knowledge of the combustion properties of di erent fuel blends Jet fuels based upon JP 8 Corresponding author Fax 1 203 432 7654 E mail address alessandro gomez yale edu A Gomez 1 Present address Shell Exploration and Production Co Two Shell Plaza 777 Walker Street Houston TX 77002 USA 2 Present address Ecole Central Paris France JP 8 100 Jet A and Jet A 1 will continue to play a central role from both a logistical and an economic viewpoint for the next few decades The



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