Level Set Methods

We present a gradient-augmented level set method that is based on a semi-Lagrangian approach, combined with Hermite p-cubic interpolation.

Semi-Lagrangian approach tracing characteristics

Images and Videos

2D Zalesak circle on a regular 64 x 64 grid.

Zalesak circle inital conditions and velocity field Zalesak circle after 1 revolution Zalesak circle after 4 revolutions
Inital conditions and velocity field Zalesak circle after 1 revolution Zalesak circle after 4 revolutions
Zalesak circle video
Zalesak circle video (19 MB)

2D deformation field on a regular 64 x 64 grid.

2D deformation field initial conditions and velocity field 2D deformation field at maximum deformation 2D deformation field at final time
Initial conditions and velocity field At maximum deformation At final time
2D deformation field at final time
2D deformation field video (17MB)

3D Zalesak sphere and 3D deformation field on a regular 50 x 50 x 50 grid.

Zalesak sphere 3D deformation field
initial state initial state
initial state initial state
quarter rotation quarter time
quarter rotation quarter time
half rotation half time
half rotation half time
three quarter rotation three quarter time
three quarter rotation three quarter time
one full rotation final time
one full rotation final time

Related Publications

J. Nave, R. R. Rosales, B. Seibold, A gradient-augmented level set method with an optimally local, coherent advection scheme, submitted to J. Comput. Phys., 2009.

Research Support

NSF grant DMS-0813648, Capturing subgrid structures with level set methods, with Ruben Rosales and Jean-Christophe Nave.