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航空发动机燃烧室燃烧过程与排放物生成的反应动力学数值模拟

马洪安 解茂昭 曾文 陈潇潇

马洪安, 解茂昭, 曾文, 陈潇潇. 航空发动机燃烧室燃烧过程与排放物生成的反应动力学数值模拟[J]. 航空动力学报, 2013, 28(2): 297-306.
引用本文: 马洪安, 解茂昭, 曾文, 陈潇潇. 航空发动机燃烧室燃烧过程与排放物生成的反应动力学数值模拟[J]. 航空动力学报, 2013, 28(2): 297-306.
MA Hong-an, XIE Mao-zhao, ZENG Wen, CHEN Xiao-xiao. Reaction kinetic numerical simulation of combustion process and emission formation in aero-engine combustor[J]. Journal of Aerospace Power, 2013, 28(2): 297-306.
Citation: MA Hong-an, XIE Mao-zhao, ZENG Wen, CHEN Xiao-xiao. Reaction kinetic numerical simulation of combustion process and emission formation in aero-engine combustor[J]. Journal of Aerospace Power, 2013, 28(2): 297-306.

航空发动机燃烧室燃烧过程与排放物生成的反应动力学数值模拟

基金项目: 国家自然科学基金(50906059)

Reaction kinetic numerical simulation of combustion process and emission formation in aero-engine combustor

  • 摘要: 选用正癸烷作为航空煤油的替代燃料,建立了正癸烷的化学反应详细机理与简化机理(包括50种组分,118个基元反应).分别采用详细机理与简化机理对正癸烷在激波管中的着火延迟时间、在预混燃烧炉内的燃烧过程进行了数值计算,并与实验结果进行了对比分析.同时,耦合该简化机理与CFD计算软件Fluent,对某型航空发动机环管形燃烧室中单个火焰筒内流动特性与燃烧过程、排放物及活性中间组分生成的反应动力学特性进行了详细分析,并与采用C12H23为燃料的单步反应机理的计算结果进行了对比分析.结果表明:采用简化机理计算得到的着火延迟时间、反应物与各主要生成物摩尔分数的整体变化趋势与实验数据吻合较好;与采用C12H23为燃料的单步反应机理相比,采用正癸烷为替代燃料的简化反应机理计算得到的温度场分布更符合实际,其出口平均温度亦更为接近燃烧室出口设计温度;同时,能更为详细了解燃料低温裂解过程及裂解产物、中间产物及主要排放物的生成规律.

     

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出版历程
  • 收稿日期:  2012-03-07
  • 刊出日期:  2013-02-28

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