Experimental investigation of n-heptane droplet combustion at high pressure conditions

An experimental study was carried out on the combustion of n-heptane droplets at atmospheric and higher pressure under normal gravity condition. Suspended droplet technique was adopted to investigate the isolated droplets. The burning rate constants were determined for each pressure and the dependence of burning rate constant on pressure was analyzed. The D2 law for droplet combustion was experimentally established. The burning rate constant was found to increase monotonically with pressure. Using back light photography and image processing techniques the flame shape and its dependence on pressure was also analyzed.