Effect of pressure on the blow-off limits of premixed CH4/air flames in a mesoscale cavity-combustor
作者： Jianlong Wan , Aiwu Fan , Hong Yao , Wei Liu
DOI: 10.1016/J.ENERGY.2015.08.026
关键词:
摘要: Abstract The blow-off limits of CH 4 /air flames in a mesoscale cavity-combustor under various pressures (P = 1.0–3.0 atm) are investigated numerically. results show that the flame limit increases first and then decreases with an increasing pressure. Three typical (P = 1, 2 3 atm) selected to perform numerical analysis detailed reaction mechanism. demonstrates intensity cavity is enhanced as pressure raised, which beneficial for stability. On other hand, front prolonged at higher This leads more intense stretching effect, detrimental Therefore, depends on competition between positive negative sides. When increased from 1 atm 2 atm, enhancement anchoring ability overwhelms augmentation increase limit. However, further raised 2 atm 3 atm, effect becomes dominated side, decrease In summary, these complicated interactions determine non-monotonic function
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