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

doctsh · February 14, 2010, 23:01

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, 23:42

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, 23:01	Solver settings-GMO-rotating coupled motion-very low reynolds no.	#1
doctsh Member s Kumar Join Date: Jul 2009 Posts: 50 Rep Power: 17	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 15, 2010 at 00:45.

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February 15, 2010, 23:42		#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.