Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Ignition Delay Times in $C_2H_2-O_2$-Ar Mixture behind a Reflected Shock Wave

  • Published : 1997.10.20
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Abstract

Detonation characteristics of acetylene were studied behind reflected shock waves in the temperature range 800-1350 K by monitoring OH emission and pressure profiles. For a comprehensive measurement of ignition delay time, the mixture composition was varied in a wide range of Ar mole % was varied from 0.625 to 2.5 in stoichiometric ratio of C2H2-O2-Ar. A computer simulation study was also performed to elucidate the important elementary steps determining ignition behavior. The 33-reaction mechanism provides a good agreement in delay time between the observed and the calculated ones.

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