微燃烧涡轮发动机微燃烧室催化氢燃烧模拟分析

发布时间：2018-05-09 16:18

  本文选题：微燃烧涡轮发动机 + 微燃烧　； 参考：《中南大学学报(自然科学版)》2016年04期

【摘要】：为揭示微燃烧室催化氢燃烧机理,根据质量守恒、动量守恒、组分守恒和能量守恒的基本规律建立微燃烧涡轮发动机微燃烧室催化氢燃烧数学模型,并耦合表面催化详细化学反应机理对不同过量空气系数n下微燃烧涡轮发动机微燃烧室燃烧进行模拟与分析。研究结果表明:混合气体在微燃烧室的入口角度和入口速度对微燃烧室出口烟气温度无明显影响;当n1.0时,出口烟气温度升高,燃烧室压强增加;当n≈1.0时,出口烟气温度最高,燃烧室压强达最大值;当n1.0时,出口烟气温度降低,燃烧室压强减小;当n1.0时,n的增加对水蒸气质量分数增加影响较大;当1.0≤n≤2.9时,n增加会导致氧气质量分数和氮气质量分数均呈递增趋势,而水蒸气质量分数却呈递减趋势;当2.9n≤4.3时,n对氧气、氮气和水蒸气的质量分数影响不大。
[Abstract]:In order to reveal the mechanism of catalytic hydrogen combustion in micro combustor, a mathematical model of catalytic hydrogen combustion in micro combustion turbine engine was established according to the basic laws of mass conservation, momentum conservation, component conservation and energy conservation. Coupled with the detailed chemical reaction mechanism of surface catalysis, the combustion of micro combustion chamber of micro combustion turbine engine with different excess air coefficient n was simulated and analyzed. The results show that the inlet angle and inlet velocity of the mixed gas in the micro combustor have no obvious effect on the flue gas temperature at the outlet of the micro combustor, and when n 1.0, the outlet flue gas temperature increases and the pressure of the combustor increases, and when n 鈮，

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