Burning-Velocity Measurement of Mixtures by the Use of a Spherical Bomb

Abstract

Measurements were made of the turbulent burning velocity of C₃H₈-air mixtures at high temperature and pressure using a spherical bomb. The effects of temperature, pressure, turbulence intensity, and stoichiometric ratio on the burning velocities were examined. It has been found that the turbulent burning velocity and the ratio of the turbulent velocity to the laminar velocity is increased with the progress of combustion. The increase rates of these become larger with increases in the initial and instantaneous turbulence velocity, temperature, and stoichiometric ratio and the relationship gradually deviates from the Damkoehler's burning velocity with an increase in temperature.