AbstractA detonation can be initiated in a fuel-oxidizer cloud by a blast wave of sufficient strength. The Zel'dovich criterion for initiation is that the blast energy must be such that when the pressure ratio across the shock front has decayed to the Chapman-Jouguet value, the distance traveled by the shock must be at least of the order of the reaction zone thickness. A modified version of this criterion has been expressed in quantitative form, and used to determine a dimensionless initiation energy using the stoichiometric value as a reference. Good agreement was found between the theory and experimentally measured initiation energies for MAPP-air, and C2H2-O2 mixtures. The theory also predicts the variation of initiation-energy with ambient pressure.


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    Title :

    A simple analysis of the blast initiation of detonations


    Contributors:

    Published in:

    Acta Astronautica ; 4 , 3-4 ; 409-424


    Publication date :

    1976-07-21


    Size :

    16 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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