A penalization technique applied to the "Volume-Of-Fluid" method: wettability condition on immersed boundaries

Pierre Horgue (1) , Marc Prat (1) , Michel Quintard (1)

1 IMFT - Institut de mécanique des fluides de Toulouse

A penalization approach is presented to simulate two-phase flow in the presence of immersed solid boundaries so as to consider highly complex objects such as porous media microstructures. Based on the standard Volume-Of-Fluid formulation, the method takes into account the wettability effects which may occur on the surface of immersed solid boundaries. A spatial shift between the no-slip and the wettability conditions is introduced to make the method stable, regardless of the simulation parameters. The penalized VOF model and the numerical choices are then validated by a series of tests on capillary-dominated flows, which represent the most challenging cases for VOF simulations.

Mots clés: Penalization; Volume-Of-Fluid; Two-phase flow; Immersed boundary

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Pierre Horgue, Marc Prat, Michel Quintard. A penalization technique applied to the "Volume-Of-Fluid" method: wettability condition on immersed boundaries. Computers and Fluids, 2014, vol. 100, pp. 255-266. ⟨10.1016/j.compfluid.2014.05.027⟩. ⟨hal-01010612⟩