SIMULATION OF THE SLOW COMBUSTION-TO-DETONATION TRANSITION IN A HYDROGEN–OXYGEN–INHIBITOR (C2Br2F4) MIXTURE

This paper presents a simulation of the slow (laminar) combustion (defl agration)-to-detonation transition in a mixture of hydrogen and oxygen for two cases: case 1 — the mixture contains no inhibitor, its composition varies depending on the stoichiometric relation, and case 2 — the stoichiometric mixture contains an inhibitor C2Br2F4, its concentration is varied. In the investigation, we solved the equations of combustion gas dynamics obtained on the basis of primary notions "combustion surface" and "fl ame velocity." In the fi rst case, the distance and time of transition to detonation increase rapidly with deviation from the stoichiometric composition of the hydrogen–oxygen mixture. The same is also observed in the second case with increasing inhibitor concentration. Transition to detonation is possible until the inhibitor concentration reaches its limiting value at which laminar combustion is impossible.
   
Author:  K. O. Sabdenov, K. E. Sakipov, M. Erzada and S. A. Kasymova
Keywords:  defl agration-to-detonation transition, hydrogen–oxygen mixture, infl uence of inhibitors on the initiation of detonation
Page:  1334