[hilllike]

hi,
I wrote a 3d two phase model code based on a explicit projection method and there are some problems in my model.
In this model I didn't use surface tension model.

when I calculate the dam breaking case, there is velocity that is normal to the free surface and the stability is very bad.

Can anybody help me? I have tried many methods, (using 4 types of linear solver), but the result doesn't become better.

By the way,the most biggest residual locate at the corner.

Thank all.