Self-Similar Nonasymptotic Solution of Multireaction Stationary Flow in Catalytic Microcombustor

The present analytical work studies the modeling of a catalytic microcombustor with the stationary flame. In this model, the nonasymptotic solution of energy and mole fraction equations with self-similar matching condition is made at preheat, reaction, and postflame zones, where comparison between multi- and single-reaction combustion and calculations of noncatalytic and catalytic condition is achieved. The results are checked by experimental published data to ensure these comparisons show acceptable agreements. The investigations show that the position of noncatalytic maximum temperature occurs at the larger value of X coordinates than its catalytic condition, where this issue is because of the occurrence of mass conversion in a larger length for the catalytic condition than noncatalytic one. At low Peclet number, the single- and multireaction curves are coincidence, whereas at high Peclet number, the multireaction values are nearly 5% smaller than single-reaction ones.