Solver settings-GMO-rotating coupled motion-very low reynolds no.

doctsh · February 14, 2010, 22:01

Hello everyone.

I have a flow3d simulation with a GMO model rotating with very high viscous environment and coupled motion in low reynolds number. I have tried with all the settings in numerics which fails. It says convective flux exceeded or starting with smaller time step or starting with small omega.

I am new to CFD, can anybody help me what settings/numerics I should use to get simulation done? (like maximum/minimum time step, explicit/implicit, GRES or etc..)

Thanks in advance

ck5285 · February 15, 2010, 22:42

Hi i also have a similar experience that Flow-3D have difficulty in solving high viscosity fluid (>2Pa-s) problem. Thus would like to understand how the expert solve this kind of problem here.

February 14, 2010, 22:01	Solver settings-GMO-rotating coupled motion-very low reynolds no.	#1
doctsh Member s Kumar Join Date: Jul 2009 Posts: 50 Rep Power: 16	Hello everyone. I have a flow3d simulation with a GMO model rotating with very high viscous environment and coupled motion in low reynolds number. I have tried with all the settings in numerics which fails. It says convective flux exceeded or starting with smaller time step or starting with small omega. I am new to CFD, can anybody help me what settings/numerics I should use to get simulation done? (like maximum/minimum time step, explicit/implicit, GRES or etc..) Thanks in advance Last edited by doctsh; February 14, 2010 at 23:45.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problem with Coupled Solver!	Parag Gadgil	Main CFD Forum	2	December 20, 2007 13:02
Multicomponent fluid	Andrea	CFX	2	October 11, 2004 05:12
compressible two phase flow in CFX4.4	youngan	CFX	0	July 1, 2003 23:32
coupled solver / uncoupled solver	Jaan Unger	Main CFD Forum	0	September 3, 2002 08:30
CFX 5.5	Roued	CFX	1	October 2, 2001 16:49

February 15, 2010, 22:42		#2
ck5285 Senior Member Join Date: Mar 2009 Posts: 129 Rep Power: 17	Hi i also have a similar experience that Flow-3D have difficulty in solving high viscosity fluid (>2Pa-s) problem. Thus would like to understand how the expert solve this kind of problem here.