[Akshay]

Hi guys

I was simulating a 2 fluid interface problem and at a particular instant there is some splashing that occurs. The mesh is clean(aspect and other parameters) and I have also increased the itmax to 250. The simulation runs fine and the results look good. But I want to understand the impact of the pressure iteration not converging and in addition to that, the Epsi and Max Resi somtimes vary by a huge factor. I'm assuming this will lead to inaccuracy in my simulations but how do I quantify this? Below is the log.. You can see the epsi is 4.49 and max.resid is 17.59 ... what does this correspond to in terms of accuracy?

LOG

pressure iteration did not converge in itmax= 250 iterations
at time= 2.19336E+00 cycle= 21954 iter= 250 delt= 7.73638E-06
epsi= 4.491E+00 maximum residual= 1.759E+01 at i= 120 j= 79 k= 24 block= 1
restarting cycle with smaller time-step size
present relaxation factor omega= 8.778E-01
present time-step size delt= 7.736E-06
pressure iteration did not converge in itmax= 250 iterations
at time= 2.19338E+00 cycle= 21959 iter= 250 delt= 4.93690E-06
epsi= 5.732E+00 maximum residual= 2.238E+01 at i= 47 j= 209 k= 36 block= 1
restarting cycle with smaller time-step size
present relaxation factor omega= 8.778E-01
present time-step size delt= 4.937E-06
pressure iteration did not converge in itmax= 250 iterations
at time= 2.19370E+00 cycle= 22000 iter= 250 delt= 1.82467E-05
epsi= 5.206E+00 maximum residual= 2.550E+01 at i= 95 j= 155 k= 71 block= 1