Extinction Characteristics of Premixed Flame in Heated Microchannel at Reduced Pressures
作者： Yosuke Tsuboi , Takeshi Yokomori , Kaoru Maruta
DOI: 10.1080/00102200802269723
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摘要: The effects of pressure, flow velocity and mixture composition on extinction limits premixed methane/air flames in a mesoscale channel (2 mm) with temperature gradient were studied both experimentally numerically at low pressure conditions (0.2–0.05 atm). An external heat source was employed to form steady along the for simulating state recirculation. At conditions, combustion small-scale can be simulated since flame becomes thicker decrease pressure. Both experimental numerical results showed that maximum upper blow-off found fuel-leaner side under conditions. That is, flammable regions tendencies asymmetric stoichiometric ratio, while conventional region atmospheric is symmetric it. Furthermore, computational implied existence lower limit stable alth...
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