Detonation initiation developing from the Richtmyer–Meshkov instability
查看参考文献17篇
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文摘
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Detonation initiation resulting from the Richtmyer–Meshkov instability is investigated numerically in the configuration of the shock/spark-induced-deflagration interaction in a combustive gas mixture. Two-dimensional multi-species Navier–Stokes equations implemented with the detailed chemical reaction model are solved with the dispersion-controlled dissipative scheme. Numerical results show that the spark can create a blast wave and ignite deflagrations. Then, the deflagration waves are enhanced due to the Richtmyer–Meshkov instability, which provides detonation initiations with local environment conditions. By examining the deflagration fronts, two kinds of the initiation mechanisms are identified. One is referred to as the deflagration front acceleration with the help of the weak shock wave, occurring on the convex surfaces, and the other is the hot spot explosion deriving from the deflagration front focusing, occurring on the concave surfaces. |
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来源
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Acta Mechanica Sinica
,2007,23(4):343-349 【核心库】
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DOI
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10.1007/s10409-007-0085-2
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关键词
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Hot spot
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Deflagration front acceleration
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Detonation initiation
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Richtmyer
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Meshkov instability
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地址
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LHD, Institute of Mechanics, CAS, Beijing, 100080
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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0567-7718 |
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学科
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力学 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:3087986
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