CO2稀释气对掺氢天然气层流燃烧速度的影响
首发时间:2010-01-18
摘要:本文在定容燃烧弹内研究了掺氢天然气-空气-稀释气体混合气的火焰传播规律,得到了在不同掺氢比、二氧化碳稀释度和当量比下的无拉伸层流燃烧速率,并通过马克斯坦长度分析了小半径火焰的稳定性。研究结果表明,无拉伸层流燃烧速率均随着稀释度的增加而减小,且当二氧化碳稀释度大于10%时的混合气无拉伸层流燃烧速率相对于无稀释度时的数值明显减小。
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Effect of CO2 diluent gas on flame speed of hydrogen-enriched natural gas
Abstract:The laminar flame characteristics of natural gas-hydrogen-diluent-air were studied in a constant volume combustion bomb under various equivalence ratios, hydrogen fractions and diluent ratios. Unstretched laminar burning velocity was obtained. The results showed that unstretched laminar burning velocity decreases with the increase of diluent ratio larger than 10%.
Keywords: Hydrogen enriched natural gas Diluent gas Laminar burning velocity Constant volume combustion bomb
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