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热射流点火对爆震管内火焰加速及爆震波触发影响的数值研究

赵炜 韩启祥 王家骅 张桂花

赵炜, 韩启祥, 王家骅, 张桂花. 热射流点火对爆震管内火焰加速及爆震波触发影响的数值研究[J]. 航空动力学报, 2015, 30(1): 38-45. doi: 10.13224/j.cnki.jasp.2015.01.006
引用本文: 赵炜, 韩启祥, 王家骅, 张桂花. 热射流点火对爆震管内火焰加速及爆震波触发影响的数值研究[J]. 航空动力学报, 2015, 30(1): 38-45. doi: 10.13224/j.cnki.jasp.2015.01.006
ZHAO Wei, HAN Qi-xiang, WANG Jia-hua, ZHANG Gui-hua. Numerical study on effect of hot jet ignition on flame acceleration and detonation initiation in detonation tube[J]. Journal of Aerospace Power, 2015, 30(1): 38-45. doi: 10.13224/j.cnki.jasp.2015.01.006
Citation: ZHAO Wei, HAN Qi-xiang, WANG Jia-hua, ZHANG Gui-hua. Numerical study on effect of hot jet ignition on flame acceleration and detonation initiation in detonation tube[J]. Journal of Aerospace Power, 2015, 30(1): 38-45. doi: 10.13224/j.cnki.jasp.2015.01.006

热射流点火对爆震管内火焰加速及爆震波触发影响的数值研究

doi: 10.13224/j.cnki.jasp.2015.01.006
详细信息
    作者简介:

    赵炜(1986-),男,湖北钟祥人,博士生,主要从事爆震燃烧方面的研究.

  • 中图分类号: V235.22

Numerical study on effect of hot jet ignition on flame acceleration and detonation initiation in detonation tube

  • 摘要: 为研究热射流点火对爆震管内火焰加速及爆震波触发的影响,运用34步26组分丙烷基元反应进行了二维数值模拟,获得了5种不同的热射流发生器几何结构下的爆震管内火焰传播规律及缓燃向爆震转捩(deflagration to detonation transition,DDT)的时间与距离.结果表明:爆震管中湍流在火焰加速阶段起着重要作用,在爆震波触发阶段激波与火焰相互作用占有主导地位.根据DDT过程的定义,得到DDT时间在1.4~2.0ms之间,同时发现热射流发生器长度为150mm,热射流发生器孔径在8mm时DDT时间最短,热射流发生器长度及孔径对DDT距离的影响不大.

     

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出版历程
  • 收稿日期:  2013-09-12
  • 刊出日期:  2015-01-28

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