[hemant1708]

Hi all,

I am simulating a partially submerged hydrokinetic turbine using VOF approach. I was using a different orientation before and that produced decent results. But that orientation wasn't physically possible so I am now working with a different orientation. But now when I use the same simulation setting (changing only the axis of rotation for moment calculation and rotating domain), the simulation diverges and crashes.
Initially with 20 inflation layers for the turbine, it crashed within the first timestep. With 10 layers it crashed after 2 or 3 timesteps. After removing all inflation layers, it is still crashing at 5th timestep.
It would be really great if you guys could help me out here.

I also get flow reversed in X faces in every iteration (I don't remember getting this when doing the simulation in the old but unreal orientation)

I am attaching a few pictures to make the situation clear.

And an unrelated question: when doing standard intialisation, should I compute from lower inlet (water inlet) or upper inlet (air). I have only 1 common outlet. And to add water for half of the domain, I use patch.