FEM and VOF / Level Set Methods
Intending to do some free-surface simulations, I would like to combine my FE-code (triangular Taylor-Hood elements, unstructured and fixed mesh, Galerkin residuals, unsteady incompressible flow) with some kind of VOF-method or Level-Set-method.
It would be nice if someone could give me some hints for the following problems:
Which kind of streamline-upwinding should be used for the Level-Set-function (the "concentration" function) to ensure a steep gradient and stable solution ?
Is a "re-initialization" of the Level-Set-function necessary ?
Using a VOF-method based on particle tracking, how can fluid properties (density, viscosity) be calculated on different quadrature points within the same partially (!) filled element ?
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