Kinetic drop friction.

ABSTRACT: Liquid drops sliding on tilted surfaces is an everyday phenomenon and is important for many industrial applications. Still, it is impossible to predict the drop's sliding velocity. To make a step forward in quantitative understanding, we measured the velocity [Formula: see text], contact width [Formula: see text], contact length [Formula: see text], advancing [Formula: see text], and receding contact angle [Formula: see text] of liquid drops sliding down inclined flat surfaces made of different materials. We find the friction force acting on sliding drops of polar and non-polar liquids with viscosities ([Formula: see text]) ranging from 10^-3 to 1 [Formula: see text] can empirically be described by [Formula: see text] for a velocity range up to 0.7 ms^-1. The dimensionl

SUBMITTER: Li X 

PROVIDER: S-EPMC10387105 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature