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About: Zeldovich number     Goto   Sponge   NotDistinct   Permalink

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The Zel'dovich number is a dimensionless number which provides a quantitative measure for the activation energy of a chemical reaction which appears in the Arrhenius exponent, named after the Russian scientist Yakov Borisovich Zel'dovich, who along with David A. Frank-Kamenetskii, first introduced in their paper in 1938. In 1983 ICDERS meeting at Poitiers, it was decided to name after Zel'dovich. It is defined as where * is the activation energy of the reaction * is the universal gas constant * is the burnt gas temperature * is the unburnt mixture temperature.