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Detonation initiation developing from the Richtmyer-Meshkov instability
Teng HH(滕宏辉); Jiang ZL(姜宗林); Hu ZM(胡宗民)
Source PublicationActa Mechanica Sinica
2007
Volume23Issue:4Pages:343-349
ISSN0567-7718
AbstractDetonation 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.
KeywordHot Spot Numerical-simulation Deflagration Front Acceleration Shock-waves Detonation Initiation Hot-spots Richtmyer-meshkov Instability Transition Deflagration Ignition Mixture
DOI10.1007/s10409-007-0085-2
Indexed BySCI ; CSCD
Language英语
WOS IDWOS:000248818300001
WOS KeywordNUMERICAL-SIMULATION; SHOCK-WAVES; HOT-SPOTS; TRANSITION; DEFLAGRATION; IGNITION; MIXTURE
WOS SubjectEngineering, Mechanical; Mechanics
CSCD IDCSCD:3087986
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58190
Collection力学所知识产出(1956-2008)
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GB/T 7714
Teng HH,Jiang ZL,Hu ZM. Detonation initiation developing from the Richtmyer-Meshkov instability[J]. Acta Mechanica Sinica,2007,23(4):343-349
APA Teng HH,Jiang ZL,&Hu ZM.(2007).Detonation initiation developing from the Richtmyer-Meshkov instability.Acta Mechanica Sinica,23(4),343-349.
MLA Teng HH,et al."Detonation initiation developing from the Richtmyer-Meshkov instability".Acta Mechanica Sinica 23.4(2007):343-349.
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