Spreading Behavior of Single Oil Droplet Impacting Surface with/without a Thin Liquid Film

When oil droplets impact a solid surface for oil-air lubrication, they may spread out to produce thin layer on the surface, which serves as significant source of lubrication. A test rig was constructed in this research observe spreading behavior impacting surfaces from both frontal and lateral views. From view, laser-induced fluorescence techniques are used measure thickness quantitatively during droplets. While view can shape evolution Oil droplet patterns sheet with dry different liquid film thicknesses were studied, effect viscosity radius is considered. The experimental findings demonstrate that maximum factor, central thickness, apparentness retraction all increase increases. obviously impacted by films, weakens