Level Set Slave Surface

Level Set Slave Surface = {yes|no}

Description / Usage

This card specifies whether the level set distance function is constrained during the calculation or evolves with the typical advection equation. Permissible values for this option are:

yes|on

The surface is constrained to remain on the initial surfaces throughout the calculation (moving with these surfaces if they are moving).

no|off

The surface evolves normally according to the local velocity field; this is the default.

Examples

This is a sample card:

Level Set Slave Surface = on

Technical Discussion

In a typical level set simulation, the surface is first initialized with the Level Set Initialization Method card, and then the surface evolves in time according to the local velocity field. Using this card, however, the surface is constrained to remain on the initial surfaces. If the initial surfaces are static, then the level set surface remains stationary. For moving interfaces such as those defined by an isosurface or a side set, the level set function is reinitialized at each Newton iteration to match the moving surface.

References

GT-020.1: Tutorial on Level Set Interface Tracking in GOMA, February 27, 2001, T.A. Baer