>> > The simulation does start with both phases and the geometry is supposed to > become more complex as the simulation progresses. > But so far the run is stopped before there are significant changes in the > shape of the droplet.
Humm, not sure why you are seeing degradation then. I imagine the initial geometry is not grid aligned so I'm not sure why you are seeing degradation in convergence rate. > I can give a shot to AMG: which options would you suggest to use. -pc_type gamg -pc_gamg_type agg -pc_gamg_agg_nsmooths 1 > Also, how can I project out the constant from the rhs? Thanks a lot! http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/KSP/KSPSetNullSpace.html#KSPSetNullSpace
