2019 EJRNL PP S. LEJEUNE 1.pdf?
Terbatas Ratnasari
» ITB
Terbatas Ratnasari
» ITB
Raindrop impacts on plant leaves are responsible for the dispersal of several crop
diseases. In this experimental study, we propose a generic impact configuration that shares
several qualitative features with more complex impacts on leaves. We investigate the
formation and breakup of a liquid sheet upon impact of a drop close to the horizontal
edge of an inclined substrate. The impact Weber number, the distance from the impact
point to the edge, and the substrate inclination are systematically varied. We analyze their
influence on the kinematics of both the liquid spreading on substrate and the liquid sheet
beyond the edge, as well as on the subsequent statistics of droplet ejection (radius, speed,
and time of ejection).