Effects of Temperature and Pressure on Burning Velocity

概要

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An experimental study on effects of temperature and pressure on the burning velocity of methane-air and hydrogen-air mixtures has been conducted by using the spherical bomb technique proposed by the present authors. The ranges of measurement covered the equivalence ratio from 0.8 to 1.3 for methane-air, and from 0.5 to 4.0 for hydrogen-air. The mixture temperature was varied from 291 to 500K, while the pressure from 0.5 to 30 atm for methane-air from 0.5 to 25 atm for hydrogen-air mixtures and the empirical equations for the burning velocities were obtained. Then the obtained mass burning velocities have successfully been correlated by the Arrhenius form expression, which is based on the flame theory with simple one-step kinetics, to derive the apparent order and activation energy of the overall reaction. For the both mixtures the reaction order was found to decrease with the flame temperature, and to maximum for the equivalence ratio around unity. On the other hand, the activation energy was found to decrease with the pressure, and to become maximum around the equivalence ratio giving the maximum mass burning velocity.
東海大学の論文