L E V E L S E T P A R A M E T E R S

Enter a value or expression for the Reinitialization parameter (SI unit: m/s). The default is 1.

Enter a value or expression for the Parameter controlling interface thickness els (SI unit: m). The default expression is ls.hmax/2, which means that the value is half of the maximum mesh element size in the region where the interface passes.

C O N V E C T I O N

Enter values or expressions for the components (u, v, and w in 3D, for example) of the

Velocity field u (SI unit: m/s). The applied velocity field transports the level set function through convection.

Initial Values

Use the Initial Values feature to set up the initial conditions.

D O M A I N S E L E C T I O N

From the Selection list, choose the domains to define initial values for the level set model.

I N I T I A L V A L U E S

In order to be able to use the automatic initialization, specify either Domain initially: Inside interface or Domain initially outside interface. Typically, there are two Initial Values features, one for the domains initially inside the interface, and one for the domains initially outside. The interior boundaries separating the two interfaces should be added to the selection of an Initial Interface feature.

Select Specify level set function explicitly if the automatic initialization is not required.

Boundary Conditions for the Level Set Function

The Level Set Interface include the boundary conditions:

•Inlet

•Initial Interface

•No Flow (the default boundary condition)

•Outlet

•Symmetry

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