A study of two unequal-sized droplets undergoing oblique collision

The oblique collision of two unequal-sized liquid droplets in a gaseous environment is investigated numerically. It found that the asymmetry flow field arising due to and greatly alters outcomes observed case head-on identical droplets. Our results reveal permanent coalescence occurs at intermediate angles, but large-angle collisions result reflexive separation stretching separation, respectively. Moreover, we end-pinching mechanism operational collision, capillary wave instability responsible for ligament breakup large angles. also coalesce permanently low velocity ratios high radius ratios, temporarily then split again. By conducting number numerical simulations, boundary separating them are plotted on R r ? W e ? planes, where We, Rr, represent Weber number, ratio droplets, angle,