I'm trying to simulate flow between a stator and a rotor inside a pipe. More like a screw conveyor. Can Fluent handle such a situation by dynamically re-meshing the geometry at every time step?

Yes, of course. In Adapt -> Gradient menu there is the option Dynamic. When it is switched on, you can tune an "interval dial" where this interval is each time step (if you are preforming unsteady simualtions) or an iteration (if you are making steady state sims.)

I would not recommend you an interval=1 (each time step) unless you have a small 2D grid or you have a "NASA-like" computer.

Yes, of course. In Adapt -> Gradient menu there is the option Dynamic. When it is switched on, you can tune an "interval dial" where this interval is each time step (if you are preforming unsteady simualtions) or an iteration (if you are making steady state sims.)

I would not recommend you an interval=1 (each time step) unless you have a small 2D grid or you have a "NASA-like" computer.

Good luck!

Freeman