Rotor / Stator : Modeling flows with rotating reference frame
 

Hi everyone!

I try to model the rotation of a cylinder (with roughness:look at the attached picture) inside another cylinder (smooth et non rotating) with the purpose of extracting a frequency spectrum of static pressure on the non rotating cylinder wall.

My simulation is 2D and unsteady to record the static pressure change.

The record probe will be at a fixed point on the stator wall.

I would like to know which model is the most accurate in this case (SRF, MRF, MPM ou SMM) ?


Best regards!

Benjamin



http://www.cfd-online.com/Forums/mem...e194-image.jpg

is this a cfd problem ? is there fluid in the annular region ? how is frequency spectrum analysis relevant to flow simulation ?

Yes it's a CFD problem, there is a fluid annular region between cylinders.

It's a frequency spectrum (static pressure) generated by the rotation of 'steps' (on the rotor) in the annular region.

Another view of the geometry.

I try to record the unsteady pressure signal on the outer cylinder (fixed).

http://www.cfd-online.com/Forums/mem...d-geometry.jpg

Nobody knows how to use the Sliding mesh Model in Fluent? What's the methodology? ;)