Abstract
Experimental studies are described of stratified methane-air continuous combustion in a jet-stirred conical reactor. These involved measurements of gas composition and temperature inside the reactor, as well as analyses of time-varying signals from electrostatic probes. A mathematical model also was employed that involved a staged global reaction scheme for methane oxidation, together with the k-ϵ turbulence model. The optimal conditions for stratified burning have been identified. When these are achieved, stratification can extend lean combustion limits, allow increased mass flow rates before blow-off, and improve combustion efficiency with a reduction in hydrocarbon emissions.
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