Rotor / Stator : Modeling flows with rotating reference frame

Benjikos · November 23, 2010, 19:07

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

siri · November 24, 2010, 02:49

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

Benjikos · November 24, 2010, 04:25

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.

Benjikos · November 24, 2010, 11:04

Another view of the geometry.

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

Benjikos · November 25, 2010, 11:35

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

November 23, 2010, 19:07	Rotor / Stator : Modeling flows with rotating reference frame	#1
Benjikos New Member Benjamin Join Date: Nov 2010 Posts: 5 Rep Power: 16	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

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November 24, 2010, 02:49		#2
siri Member Join Date: Oct 2010 Posts: 45 Rep Power: 16	is this a cfd problem ? is there fluid in the annular region ? how is frequency spectrum analysis relevant to flow simulation ?

November 24, 2010, 04:25		#3
Benjikos New Member Benjamin Join Date: Nov 2010 Posts: 5 Rep Power: 16	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.

November 24, 2010, 11:04		#4
Benjikos New Member Benjamin Join Date: Nov 2010 Posts: 5 Rep Power: 16	Another view of the geometry. I try to record the unsteady pressure signal on the outer cylinder (fixed).

November 25, 2010, 11:35		#5
Benjikos New Member Benjamin Join Date: Nov 2010 Posts: 5 Rep Power: 16	Nobody knows how to use the Sliding mesh Model in Fluent? What's the methodology?