Problem using dynamic mesh: unexpected velocity distribution
 

Hi everybody!

I am running a transient simulation using Dynamic mesh to define the motion of my system (angular acceleration of a solid full with fluid). The motion is correctly defined but the result is unexpected. The velocity is correct at the boundary but unable to diffuse into the whole fluid zone, as it should do.
It looks like Fluent isn't able to manage properly the transition between time steps.

Does anyone knows how Fluent manage parameters between 2 mesh positions? Do you know where my problem may come from?

Thank you very much for your help!

Tobard