number of iterations to converge solution in Fluent as Ansys Workbench output param

nnvoro · May 1, 2013, 14:52

I'm solving blood flow in Ansys 14.5 Fluent in batch mode. In Fluent I fix the maximum number of iterations but while running different cases in batch mode I can't figure out if my solution converged or just the number of iterations exceeded the maximum number of iterations.
Does anybody knows how can I set this number as output parameter in Ansys Workbench?

Thank you!
nnvoro

oj.bulmer · May 1, 2013, 15:14

Do you mean, you want to just see the progress of the FLUENT iterations? There is a setting in options to enable the monitoring of FLUENT residuals. Once enable, residuals of any FLUENT simulation running in Workbench can be seen by right click on it.

OJ

nnvoro · May 1, 2013, 16:01

Quote:

Originally Posted by oj.bulmer

Do you mean, you want to just see the progress of the FLUENT iterations? There is a setting in options to enable the monitoring of FLUENT residuals. Once enable, residuals of any FLUENT simulation running in Workbench can be seen by right click on it.

OJ

OJ, can I see them after the calculation fro one design point is finished and another design point is calculated? I want to be able to review the number of iterations for each point after calculation for all of the points is finished.

oj.bulmer · May 1, 2013, 16:05

To be honest, I don't often run the FLUENT in batch mode. Why don't you give a shot to it as I suggested and update here if it worked for you?

OJ

vasava · May 2, 2013, 02:18

There is an option in workbench called 'parameter'. I know that you could study the effect of geometry (e.g. effect of length or diameter of a pipe on the flow) or flow model parameters (e.g. effect of inlet pressure or velocity) without actually setting up multiple cases with different parameters. But I am not sure if it will work for convergence criteria.

I think you need to select your own criteria to decide if the solution has converged and try to parameterize that.

May 1, 2013, 14:52	number of iterations to converge solution in Fluent as Ansys Workbench output param	#1
nnvoro New Member Join Date: Apr 2013 Posts: 17 Rep Power: 13	I'm solving blood flow in Ansys 14.5 Fluent in batch mode. In Fluent I fix the maximum number of iterations but while running different cases in batch mode I can't figure out if my solution converged or just the number of iterations exceeded the maximum number of iterations. Does anybody knows how can I set this number as output parameter in Ansys Workbench? Thank you! nnvoro Last edited by nnvoro; May 1, 2013 at 17:31.

May 1, 2013, 16:05		#4
oj.bulmer Senior Member OJ Join Date: Apr 2012 Location: United Kindom Posts: 473 Rep Power: 20	To be honest, I don't often run the FLUENT in batch mode. Why don't you give a shot to it as I suggested and update here if it worked for you? OJ nnvoro likes this.

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May 1, 2013, 15:14		#2
oj.bulmer Senior Member OJ Join Date: Apr 2012 Location: United Kindom Posts: 473 Rep Power: 20	Do you mean, you want to just see the progress of the FLUENT iterations? There is a setting in options to enable the monitoring of FLUENT residuals. Once enable, residuals of any FLUENT simulation running in Workbench can be seen by right click on it. OJ

May 2, 2013, 02:18		#5
vasava Senior Member Paritosh Vasava Join Date: Oct 2012 Location: Lappeenranta, Finland Posts: 732 Rep Power: 23	There is an option in workbench called 'parameter'. I know that you could study the effect of geometry (e.g. effect of length or diameter of a pipe on the flow) or flow model parameters (e.g. effect of inlet pressure or velocity) without actually setting up multiple cases with different parameters. But I am not sure if it will work for convergence criteria. I think you need to select your own criteria to decide if the solution has converged and try to parameterize that.