![]() ![]() In the Wetted Wall feature, you can specify contact angles for fluid pairs at solid surfaces. Libraries for liquid-liquid and liquid-gas surface tension coefficients are available. The movement of the fluid-fluid interfaces is determined by the minimization of free energy. The predefined Three-Phase Flow multiphysics coupling combines a Laminar Flow interface with a Ternary Phase-Field interface. A surface plot of the velocity magnitude (the rainbow surface plot) over a central cross section is projected onto the rear container wall to enhance the visualization of the liquid-liquid and liquid-gas interfaces. A portion of the heavy liquid is entrained into the wake of the gas bubble and transported up into the light liquid, where it becomes negatively buoyant and falls down toward the liquid-liquid interface. In the example to the right, a gas bubble (the gray surface represents the gas-liquid interface) rises through a layer of heavy liquid (the blue surface represents the liquid-liquid interface) and into a lighter liquid. The phase field method can handle moving contact lines on no-slip boundaries. The fluid-fluid interfaces are tracked using a ternary phase field formulation that accounts for differences in the fluids’ densities and viscosities and includes the effects of surface tension. This phenomenon is also known as separated flow with surface tracking. ![]() This would be compatible with both 32 bit and 64 bit windows.The new Three-Phase Flow, Phase Field interface can be used to model the flow and interaction of three different, immiscible fluids when you need to study the exact positions of the interfaces separating the fluids. This is complete offline installer and standalone setup for OPNET Modeler 14.5.
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