The Laminar Two-Phase Flow, Level Set interface (
) found under the
Multiphase Flow>Two-Phase Flow, Level Set branch (
), is a multiphysics interface designed to track the interface between two immiscible fluids. The flow is assumed to be laminar, that is, to be of low to moderate Reynolds number. The fluids can be incompressible or compressible.
When adding the Laminar Two-Phase Flow, Level Set multiphysics interface, a
Laminar Flow and a
Level Set interface are added to the Model Builder. In addition, a multiphysics coupling feature,
The Two-Phase Flow, Level Set Coupling Feature, is added automatically under the
Multiphysics node.
The Wetted Wall Coupling Feature is also added, but with empty selection. Other
Wetted Wall multiphysics coupling features and
The Interior Wetted Wall Coupling Feature can be added when needed to model walls.
By default the fluid flow discretization is set to P1+P1, and the level set discretization is set to
Linear. This combination provides exact conservation of the integral of the level set variable when using the nonconservative form of the level set equation.
