CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   OpenFOAM (http://www.cfd-online.com/Forums/openfoam/)
-   -   Level set and Ghost Fluid Method (http://www.cfd-online.com/Forums/openfoam/81337-level-set-ghost-fluid-method.html)

alvin11 October 24, 2010 09:43

Level set and Ghost Fluid Method
 
I am studying the Level set method(LSM) and Ghost Fluid Method(GFM)recently and want to make a solver in OF,

but I have some question now ,

If the zero level set corss a cell,the cell is occupied partly by air and partly
by water, My question is how to define the velocity in this cell ,because I shoule
extroplate the real value to the ghost cell and the evolution of the levle set function need the velocity in each cell。

davidhap December 6, 2011 05:10

Quote:

Originally Posted by alvin11 (Post 280516)
I am studying the Level set method(LSM) and Ghost Fluid Method(GFM)recently and want to make a solver in OF,

but I have some question now ,

If the zero level set corss a cell,the cell is occupied partly by air and partly
by water, My question is how to define the velocity in this cell ,because I shoule
extroplate the real value to the ghost cell and the evolution of the levle set function need the velocity in each cell。

I don't know whether your problems are settled or not, you are dealing with a multiphase flow simulation, Ghost Fluid Method can be used with all real value under jump condition, you may see reference: 'M.Kang, R.P.Fedkiw, et.al. A boundary condition capturing method for multiphase incompressible flow' for some advice.


All times are GMT -4. The time now is 02:43.