A model for surface tension in the finite volume particle method without parasitic current
Moghimi, Mohsen H.
Quinlan, Nathan J.
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Moghimi, Mohsen H. , & Quinlan, Nathan J. (2018). A model for surface tension in the finite volume particle method without parasitic current. Paper presented at the 13th SPHERIC International Workshop, Galway, Ireland, 26–28 June.
A surface tension model has been developed in the finite volume particle method (FVPM). Surface tension force is applied only on free-surface particles, which are inexpensively and robustly detected using the FVPM definition of interparticle area. We present a simple model in which the direction of the pairwise surface tension force is approximated by the common tangent of free-surface particle supports. The method is validated in 2D for formation of an equilibrium viscous drop from square and elliptical initial states, drops on hydrophobic and hydrophilic walls, and impact of a small cylinder on a liquid surface. Results are practically free from parasitic current associated with inaccurate curvature determination in some methods.