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- Title
3D computation of an incipient motion of a sessile drop on a rigid surface with contact angle hysteresis.
- Authors
Linder, Nicklas; Criscione, Antonio; Roisman, Ilia; Marschall, Holger; Tropea, Cameron
- Abstract
Contact line phenomena govern a large number of multiphase flows. A reliable description of the contact line dynamics is therefore essential for prediction of such flows. Well-known difficulties of computation of the wetting phenomena include the mesh dependence of the results caused by flow singularity near the contact line and accurate estimation of its propagating velocity. The present study deals with the computational problem arising from the discontinuity in the dependence of the dynamic contact angle on the propagation velocity, associated with the contact angle hysteresis. The numerical simulations are performed using the volume of fluid method. The boundary conditions in the neighborhood of the contact line are switched depending on the value of the computed current local contact angle between a propagating contact line and a pinning condition. The method is applied to the simulation of the deformation and incipient motion of a shedding drop. The model is validated by comparison of the numerical predictions with experimental data.
- Subjects
MULTIPHASE flow; LUNAR transient phenomena; CONTACT angle; FLUX pinning; VELOCITY
- Publication
Theoretical & Computational Fluid Dynamics, 2015, Vol 29, Issue 5/6, p373
- ISSN
0935-4964
- Publication type
Article
- DOI
10.1007/s00162-015-0362-9