Cyclone high swirl

bramv101 · June 30, 2009, 09:52

Hi all,

My problem:
Vanes are integrated in a tube and after this an axial and radial exit.
I use reynolds stress model however residuals and continuity remain at 0.05 for 2000+ iterations.
Mesh is fine enough, BC are pretty straightforward = 1 inlet 2 pressure outlets
incompressible airflow at <0.1Mach.
I even extended the tubes for 500 percent before and after the vanes.

Anybody an idea why this problem is not converging???

jdt152 · July 9, 2009, 06:11

Hi,

I've just completed an analysis for a cyclone + filter unit in CFX and got it to converge... willing to help if needed

michael_owen · July 9, 2009, 09:45

Have you post processed the residuals? Where are they remaining high? This will probably give you a clue what is going on.

June 30, 2009, 09:52	Cyclone high swirl	#1
bramv101 Member TonyD Join Date: Apr 2009 Posts: 85 Rep Power: 17	Hi all, My problem: Vanes are integrated in a tube and after this an axial and radial exit. I use reynolds stress model however residuals and continuity remain at 0.05 for 2000+ iterations. Mesh is fine enough, BC are pretty straightforward = 1 inlet 2 pressure outlets incompressible airflow at <0.1Mach. I even extended the tubes for 500 percent before and after the vanes. Anybody an idea why this problem is not converging???

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July 9, 2009, 06:11		#2
jdt152 New Member Join Date: Jun 2009 Posts: 3 Rep Power: 16	Hi, I've just completed an analysis for a cyclone + filter unit in CFX and got it to converge... willing to help if needed

July 9, 2009, 09:45		#3
michael_owen Senior Member Michael P. Owen Join Date: Mar 2009 Posts: 196 Rep Power: 17	Have you post processed the residuals? Where are they remaining high? This will probably give you a clue what is going on.