The Normal Flame Velocity and Analysis of the Effect of the System Parameters on This Velocity

A process chart of flame combustion of gases is suggested, and the region of existence of the normal (or standard) burning velocity $U_n$ is given. The results of analysis of numerous experimental data are used to determine the impact made on $U_n$ by parameters such as pressure, flame temperature, chemical composition of the mixture, and preheating of the mixture. Generalizing dependences of the normal burning velocity $U_n$ on the adiabatic combustion temperature $T_a$ and on the preheating temperature $T_0$ are obtained for a wide range of combustible hydrocarbon gases.