G0700501 Numerical study about the influence of rushing and unsteady evaporation on the group combustion behavior of droplets group

Abstract

Numerical studies were carried out for examining the influence of initial velocity and unsteady evaporation of droplets on the group combustion behavior of droplets group. Unsteady evaporation and ignition delay are taken into consideration by solving the transfer equations of heat and mass which govern droplet evaporation and by employing detailed reaction kinetics. Calculation results indicate that giving initial velocity to droplets group change ignition and combustion behavior from symmetric to asymmetric. Droplets on leading edge side strengthen tendency of single droplet combustion with the increase of initial velocity. Though droplets on trailing edge side strengthen the tendency of group combustion for relatively small initial velocity, they strength tendency of single droplet combustion for relatively large initial velocity.