Influence of Heat Loss on the Burning Velocity of Flame Propagation through Organic Dust Particles

This paper presents the influence of heat-loss on the structure of flame during propagation through two-phase mixture including micro-organic particles and air in the framework of thermal-diffusive model with non-unity Lewis number and Damköhler number (ratio of chemical reaction rate to vaporization rate). Then، burning velocity as a combustion parametere is analytically characterized with heat-loss impact. The model predictions are validated with both published experimental data and previous theoretical models، and reasonable agreement is achieved. The obtained results demonstrate that heat-loss plays a significant role in the reduction of the burning velocity.