Retraction dynamics of water droplets after impacting upon solid surfaces from hydrophilic to superhydrophobic
Fujun Wang, Tiegang Fang
Abstract
The retraction dynamics of water droplets impacting on surfaces with different wettabilities is studied. Three modes of droplet retractions can be classified as inertial, capillary, and spherical-cap. A new model is proposed to predict the inertial-mode retraction rate of water droplets on different surfaces. The scaling of retraction curves is revised to reveal the similarity behavior of droplet retraction dynamics.
Topics & Concepts
Dynamics (music)ScalingInertial frame of referenceSolid surfaceCapillary actionMechanicsMaterials scienceFictitious forceNanotechnologyChemical physicsClassical mechanicsPhysicsGeometryComposite materialMathematicsAcousticsFluid Dynamics and Heat TransferSurface Modification and SuperhydrophobicityFluid Dynamics Simulations and Interactions