聚心火焰在共振腔作用下引发爆轰的数值研究

归明月 范宝春 董刚 于陆军

归明月, 范宝春, 董刚, 于陆军. 聚心火焰在共振腔作用下引发爆轰的数值研究[J]. 高压物理学报, 2007, 21(2): 151-156 . doi: 10.11858/gywlxb.2007.02.006
引用本文: 归明月, 范宝春, 董刚, 于陆军. 聚心火焰在共振腔作用下引发爆轰的数值研究[J]. 高压物理学报, 2007, 21(2): 151-156 . doi: 10.11858/gywlxb.2007.02.006
GUI Ming-Yue, FAN Bao-Chun, DONG Gang, YU Lu-Jun. Numerical Investigations of Detonation Induced by Implosion Flame inResonator Cavity[J]. Chinese Journal of High Pressure Physics, 2007, 21(2): 151-156 . doi: 10.11858/gywlxb.2007.02.006
Citation: GUI Ming-Yue, FAN Bao-Chun, DONG Gang, YU Lu-Jun. Numerical Investigations of Detonation Induced by Implosion Flame inResonator Cavity[J]. Chinese Journal of High Pressure Physics, 2007, 21(2): 151-156 . doi: 10.11858/gywlxb.2007.02.006

聚心火焰在共振腔作用下引发爆轰的数值研究

doi: 10.11858/gywlxb.2007.02.006
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    通讯作者:

    范宝春

Numerical Investigations of Detonation Induced by Implosion Flame inResonator Cavity

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    Corresponding author: FAN Bao-Chun
  • 摘要: 基于带化学反应的二维轴对称Euler方程,利用带有Superbee限制函数的波传播算法,对共振腔中的氢气-空气预混气的聚心燃烧进行了数值模拟,讨论了共振腔不同抛物面对起爆的影响。数值结果表明,在开始阶段,燃烧诱导的激波在轴心、火焰和固壁的反射,使火焰失稳,随后共振腔中的抛物壁面上产生一定频率和强度的反射激波,不断穿越火焰,使火焰进一步失稳,加剧了燃烧速度,最终导致爆轰的形成。同时,火焰在与激波的作用过程中,形状扭曲变形,呈封闭端小敞口端大的扁平头部蘑菇云。共振腔抛物面的不同形状引起激波聚焦位置的变化,会影响激波和火焰的相互作用,使起爆提前或推迟,甚至不起爆。

     

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出版历程
  • 收稿日期:  2006-06-19
  • 修回日期:  2006-09-30
  • 发布日期:  2007-06-05

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