A phenomenological model for hydrocarbon high-temperature autoignition |
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Authors: | M. V. Petrova F. A. Williams |
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Affiliation: | Department of Mechanical and Aerospace Engineering , Center for Energy Research, University of California , San Diego, La Jolla, CA, 92093, USA |
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Abstract: | A four-step phenomenological chemical–kinetic model is presented that is believed to apply to many aspects of combustion of most hydrocarbons at temperatures above about 1000 K. The mechanism involves chain initiation through reactive collision of fuel and oxidizer molecules, fuel consumption in a step that removes radicals, oxidizer consumption in a step that produces radicals and a chain termination step. An expression for the autoignition time is derived on the basis of this model and is applied to describe the ignition of propane–air mixtures and a few other hydrocarbons. It is shown that excellent agreement with ignition times obtained from detailed chemistry can be achieved by this model. |
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Keywords: | Reduced mechanisms chemical-kinetic mechanisms autoignition propane combustion |
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