Parametric Study With Fluent

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  • Last Post 02 July 2019
yalin posted this 26 June 2019

Hello,

I am doing a parametric study on a system and I am studying the effect of inlet temperature of the fluid on the temperature of the critical part in the system. 

I have set up a parametric study with fluent, so I am using the same mesh, and only changing one temperature parameter to see the results. The problem is that every time parametric study changes the temperature and wants to run the simulation, it is kind of loading the mesh and setup file again and again. This process elongates the simulation time significantly. I found if I do that manually, it will be way shorter. 

My question is that if there is a way to prevent fluent from reloading the model and just adjusting the parameter and running the simulation?

Thank you for your help.

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rwoolhou posted this 27 June 2019

I thought the mesh update was more intelligent than that, which version are you using?

One approach will be to export the case file & then read it back into Workbench in a Fluent Component: that way it's not attached to the mesh. You set up as normal from there. 

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yalin posted this 27 June 2019

Thank you for your response. I am using the latest version 2019R2. 

I will try that, I think in that case it will reread the case file and it might take a while again. I tried changing the parameters while fluent is open when I click on the refresh button on the top, it only refreshes the input parameters, which is fast. I think that would be great if the same way could be enabled in the automated parametric study. 

abenhadj posted this 27 June 2019

Are you working with components? Under design parameter tab in AN hit update parameters and not full project.

Best regards, Amine

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yalin posted this 27 June 2019

Hi Amine,

 

Thank you for your response, I am updating the design points not the entire project. I am using the update design points. As shown below, for every design point, it is resetting the fluent (not closing it), loading mesh and case again and then updating the input parameters and running the simulation. 

This loading is the longest stage of a short simulation. 

abenhadj posted this 27 June 2019

You can enable store case under solution or setup cell (first-time creatingvthevfluent component). Thus would result in Fluent just loading case file( like ydual) insteafing of reading mesh and applying settings.

Best regards, Amine

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yalin posted this 27 June 2019

Dear Amine,

 

I tried importing only case file, it still reloads the case file and changes the input the parameters every time wants to use new parameters. 

Also, I could not find the "store case" option. Could you please send a screenshot of that option?

Thank you.

abenhadj posted this 02 July 2019

Check 1.5.3. Specifying Other Setup and Solution Cell Settings in Fluent in WB Users Guide!

Best regards, Amine

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