Point flow exception:overflow

January 23, 2009, 02:29

Hi,

I am facing problem in CFX-Simulation. Case is regarding Rotor-stator-Radial-splitter(Core and Bypass) case.

Problem : point flow exception: overflow.

I have checked with the BC'S and Initialisation. Could you please suggest?

Regards, Jwala.

January 26, 2009, 17:04

Hi,

Your simulation is diverging. Read the section in the documentation about "obtaining convergence". This may also help: http://www.cfd-online.com/Wiki/Ansys...gence_criteria

Glenn Horrocks

January 27, 2009, 18:04

Are you running steady state simulation?

January 28, 2009, 07:08

Hi,

Yes I am running steady state simulation.

Regards, Jwala.

January 28, 2009, 11:56

Under solver setting reduce your time step. It works for me when I do that!

January 29, 2009, 01:46

Hi,

Thanks for the suggestion. I had done the same before but the convergence is not good.

Regards, Jwala.

January 29, 2009, 02:08

Hi,

Thanks for the information. I will implement the suggested methods .

Regards, Jwala.

January 23, 2009, 02:29	Point flow exception:overflow	#1
Jwala Guest Posts: n/a	Hi, I am facing problem in CFX-Simulation. Case is regarding Rotor-stator-Radial-splitter(Core and Bypass) case. Problem : point flow exception: overflow. I have checked with the BC'S and Initialisation. Could you please suggest? Regards, Jwala.

January 26, 2009, 17:04	Re: Point flow exception:overflow	#2
Glenn Horrocks Guest Posts: n/a	Hi, Your simulation is diverging. Read the section in the documentation about "obtaining convergence". This may also help: http://www.cfd-online.com/Wiki/Ansys...gence_criteria Glenn Horrocks

January 27, 2009, 18:04	Re: Point flow exception:overflow	#3
Ahmed Guest Posts: n/a	Are you running steady state simulation?

January 28, 2009, 07:08	Re: Point flow exception:overflow	#4
Jwala Guest Posts: n/a	Hi, Yes I am running steady state simulation. Regards, Jwala.

January 28, 2009, 11:56	Re: Point flow exception:overflow	#5
Ahmed Guest Posts: n/a	Under solver setting reduce your time step. It works for me when I do that!

January 29, 2009, 01:46	Re: Point flow exception:overflow	#6
Jwala Guest Posts: n/a	Hi, Thanks for the suggestion. I had done the same before but the convergence is not good. Regards, Jwala.

January 29, 2009, 02:08	Re: Point flow exception:overflow	#7
Jwala Guest Posts: n/a	Hi, Thanks for the information. I will implement the suggested methods . Regards, Jwala.

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