Modeling of spray impact on solid surfaces

This work presented in this article differs from conventional approaches in modeling spray impact oil walls and films by departing from the idea that results obtained from single drop impacts can be simply extrapolated to the case of sprays. An empirical model of spray impact on solid surfaces accou nting for the interaction of neighboring impacts is proposed Propagation of a crown resulting from the impact of a single drop is analyzed theoretical ly, and a statistical parameter lambda characterizing the occurrence probab ility of crown interactions on the surface, is estimated Then, the model fo r single drop impacts is corrected using the parameter lambda to fit the ex perimental results of spray impact. A simple form of the probability densit y function of the secondary droplets is proposed, and analytical expression s for its parameters are given. It is also shown experimentally that the be havior of the spray at a given point near the solid surface can be influenc ed by conditions far from this point.