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WARNING 'Vertex' values for Variable 'xxx' do not exist

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Old   January 10, 2020, 11:20
Exclamation WARNING 'Vertex' values for Variable 'xxx' do not exist
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Gianmario Ledda
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Dear all,

I'm working with Fluent and I need to create the expression to use the custom variable (ex.xxx).

But when I define my variable the following an error message appear: "WARNING 'Vertex' values for Variable 'xxx' do not exist on Geometry /DATA READER/CASE:Case case_file_name/BOUNDARY:desired-surface. ". this error is due to the following expression: Temperature^4-298.15^4.

How I can fix it?

Thanks
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Old   August 15, 2020, 06:02
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MLutfiFauzi
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Try to write Temperature - 10 or anyting else and the same error will come. I encouter same problem with you.

It just will fine if Temperature*2 or anyting except + and -.
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Old   August 15, 2020, 06:04
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Did you have solve your problem? I'm still confuse
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Old   January 12, 2021, 07:38
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Quote:
Originally Posted by LutfiFauzi View Post
Try to write Temperature - 10 or anyting else and the same error will come. I encouter same problem with you.

It just will fine if Temperature*2 or anyting except + and -.

Try to write Temperature - 10[K], 10 is dimensionless.
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Old   August 25, 2022, 14:15
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Kennie
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Hello there,

Might be a little late but in case someone needs this : I had the same issue with a user-defined variable on CFD-Post and the reason I had that warning is because in a specific area of my geometry, the variable went to an infinite value. The denominator of the variable was 1-Z (Z being another variable, the mixture fraction, which is between 0 and 1) and in order to not reach infinity, I simply wrote 1.00001-Z at the denominator instead in my user defined-variable. That solved the problem very well without making a significant difference to my results.

Cheers!
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