AbstractThe aim of the present paper is to study detonation initiation due to focusing of a shock wave reflected inside a cone. Both numerical and experimental investigations were conducted. Comparison of results made it possible to validate the developed 3-d transient mathematical model of chemically reacting gas mixture flows incorporating hydrogen – air mixtures. The results of theoretical and numerical experiments made it possible improving kinetic schemes and turbulence models. Several different flow scenarios were detected in reflection of shock waves all being dependent on incident shock wave intensity: reflecting of shock wave with lagging behind combustion zone, formation of detonation wave in reflection and focusing, and intermediate transient regimes.

    HighlightsThe promoting effect for detonation onset due to focusing of a shock wave is studied.Several different flow scenarios were detected in reflection of shock waves.The numerical and experimental study of the detonation initiation were conducted.The 3-d mathematical model of chemically reacting gas mixture flows was validated.


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    Title :

    Detonation onset following shock wave focusing


    Contributors:

    Published in:

    Acta Astronautica ; 135 ; 114-130


    Publication date :

    2016-09-13


    Size :

    17 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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