The Turbulent Two-Phase Flow, Phase Field Interfaces
The Turbulent Two-Phase Flow, Phase Field interfaces () found under the Multiphase Flow>Two-Phase Flow, Phase Field branch (), are multiphysics interfaces designed to track the interface between two immiscible fluids. The flow is by default assumed to be turbulent. The fluids can be incompressible or compressible.
When adding a Turbulent Two-Phase Flow, Phase Field multiphysics interface, a Turbulent Flow and a Phase Field in Fluids interface are added in the Model Builder. In addition, a multiphysics coupling feature, The Two-Phase Flow, Phase Field Coupling Feature, is automatically added under the Multiphysics node. Note that unlike the Two-Phase Flow, Level Set interfaces, the wetted wall feature here is not implemented as a separate multiphase coupling boundary feature but as a default feature in the Phase Field in Fluids interface.
Wetted Wall
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The Turbulent Flow, Algebraic yPlus interface () combines a Phase Field in Fluids interface with a Turbulent Flow, Algebraic yPlus interface.
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The Turbulent Flow, L-VEL interface () combines a Phase Field in Fluids interface with a Turbulent Flow, L-VEL interface.
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The Turbulent Flow, k-ε interface () combines a Phase Field in Fluids interface with a Turbulent Flow, k-ε interface.
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The Turbulent Flow, Realizable k-ε interface () combines a Phase Field in Fluids interface with a Turbulent Flow, Realizable k-ε interface
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The Turbulent Flow, k-ω interface () combines a Phase Field in Fluids interface with a Turbulent Flow, k-ω interface.
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The Turbulent Flow, SST interface () combines a Phase Field in Fluids interface with a Turbulent Flow, SST interface.
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The Turbulent Flow, Low Re k-ε interface () combines a Phase Field in Fluids interface with a Turbulent Flow, Low Re k-ε interface.
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The Turbulent Flow, Spalart-Allmaras interface () combines a Phase Field in Fluids interface with a Turbulent Flow, Spalart-Allmaras interface.
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The Turbulent Flow, v2-f interface () combines a Phase Field in Fluids interface with a Turbulent Flow, v2-f interface.
Simulations using the Turbulent Two-Phase Flow, Phase Field interfaces are always time-dependent since the position of an interface almost always depends on its history.
Interface Properties
Turbulence Model
By default the Turbulence model type selected is RANS. If None is selected for Turbulence model type, the model becomes laminar.
Theory for the Two-Phase Flow Interfaces