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Using lift and drag as convergence criteria?

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Old   February 25, 2016, 11:31
Default Using lift and drag as convergence criteria?
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Cameron
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Hello all,

I'm wondering if it's possible to create custom convergence criteria for a simpleFoam case, namely my lift and drag values from the forces library. It's openfoam, so I'm sure there's a way to do it, but I can't work it out.

Alternatively, I suppose I could write some kind of script that checks the outputted lift and drag values, is it easy to add a custom ending condition to the simulation?
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Old   February 29, 2016, 10:01
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Fabian Roesler
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Hi

It's not possible with older OpenFOAM versions. However, in OpenFOAM 3.0+ there are new convergence criteria implemented that can use the output of other functionObjects.
Check this link:
http://www.openfoam.com/version-v3.0...UserStatistics

Cheers

Fabian
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Old   March 1, 2016, 11:43
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Cameron
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Thanks that was exactly what I was looking for.
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Old   March 16, 2016, 09:42
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Hi, all

I am using OpenFoam 2.3.1x in Windows. I am wondering if there is a way to use lift and drag coefficients as convergence criteria. Does anyone have an idea?

Quote:
Originally Posted by fabian_roesler View Post
Hi
It's not possible with older OpenFOAM versions. However, in OpenFOAM 3.0+ there are new convergence criteria implemented that can use the output of other functionObjects.
Check this link:
http://www.openfoam.com/version-v3.0...UserStatistics
Obviously, this method does not work (I tried to be sure).

Best regards,

mqsim
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convergence, convergence criteria, lift, residuals, simplefoam

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