Binary collisions and coalescence of droplets in low-pressure fuel injector

The phenomena of binary collisions and coalescence droplets was investigated from experimental studies but still are missing real applications such as fuel injector. main purpose the current study is to investigate a practical port To accomplish this, direct microscopic images taken high speed video camera coupled with long-distance microscope Barlow lens using backlighting method. Experimental optimization spatial resolution depth -of -field achieved. results compared predictions empirical equations for different collision regimes. Droplet sizes velocities values predicted by equations. this are: probability very low in tangential velocity components small play an essential role shape deformation during droplets. previous published calculate dimensionless parameters, Weber number, droplet diameter ratio, impact parameter applicable