Combustion Science and Technology · 1980 · 19 citations · 5 references
EngineeringChemical EngineeringMechanical EngineeringCombustionHeat TransferThermodynamicsCombustion FundamentalsCombustion ProcessesCombustion ThermodynamicsFlame StabilizationFlame StructureLaminar FlamesFlame StabilityHeat Release RateJet FlamesLaminar CombustionLaminar Flame StructureLaminar Premixed FlamesPyrolysisTemperature Profiles
Abstract An experimental study was made of the structure of the stabilizing region of plane, laminar fuel-jet flames of methane ejected parallel to the air stream. Velocity and temperature profiles were measured in detail and were analyzed to yield the distributions of the heat-flux vector and the heat-release rate throughout the stabilizing region. Results show that, a region of the higher heat-release rate appears near the flame base. This is due to combustion of a small volume of premixed gases produced as a result of fuel and air coming into direct contact. Another region of the negative heat-release rate appears on the fuel side of the flame zone. This is attributed to pyrolysis-type reactions. Towards the fuel-nozzle wall the heat-release rate decreases remarkably, still the heat-release rate in the dark space is substantial.
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