Free-surface flow induced by drop impact

The phenomenon of a drop impact is a challenging physical problem, very rich in fluid dynamics, and important in many technical, environmental and industrial fields. It is of relevance to sprinkler systems for fire suppression, soil erosion, pesticide spraying in agriculture, steam turbines, spray cooling, high-quality ink-jet printing, paint spraying, internal combustion engines with direct fuel injection, etc. In the process industry equipment is used that often requires rapid heat removal from solid surfaces by spraying them with liquid. This work is aimed at investigating free-surface flows associated with drop impact onto dry, wetted, heated and porous surfaces. The main goal of the work is the computational and the theoretical study of the flow generated by drop impact onto different surfaces, relevant for spray impingement. The numerical simulations of the flow configurations provide a detailed insight into flow dynamics and the computational results provide the flow details which are inaccessible in experiments, yielding the required database for defining new flow patterns and their analytical modeling.