Four simplified chemistry models for propane combustion including one-step, two-step, three-step and eight-step reaction mechanisms which consist of stable intermediates and final products only are examined. Two well-defined laminar premixed propane-air flames are tested for model validation. The study shows that the three-step reaction mechanism can yield the most satisfactory predictions of temperature as well as O_2, CO_2 and CO concentrations for the fuel-rich flame among the chemistry models investigated. It is also found that the simplest one-step reaction mechanism suffices to describe propane oxidation in the fuel-lean flame which has a simpler flame which has a simpler flame structure than the fuel-rich flame.
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