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Old   January 29, 2013, 10:07
Default number of digits
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Thomas Hoffmann
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hey all.
I'm plotting some temperature profiles in CFD post, see attached. Ass seen the plot is very notchy because Fluent only calculates with 3 digits after the comma.
Does any of you guys know how to configure fluent to calculate with more than 3 digits after the comma?

Thanks

Thomas
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Old   January 30, 2013, 08:42
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Paritosh Vasava
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If you are making XY-Plot, look in Plot>XY Plot > Axes > Precision.
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Old   January 30, 2013, 09:28
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Thomas Hoffmann
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Hi.
Is that in CFD-Post? I can't find the buttons you mention..
I've created a Chart where the data source comes from a Line that I've created in the section where I want to see the temperature profile.
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Old   January 30, 2013, 09:55
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Paritosh Vasava
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Soory my mistake, I put options for Fluent.

For CFD-Post look in to Chart > X-axis(tab). Uncheck 'Determine the number format automatically' and then you will be able to edit 'Precision'.
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Old   January 30, 2013, 10:00
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Thomas Hoffmann
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hmm, I've tried that, see attached.. I think Fluent have only calculated the result with 3 digits. When I increase the precision to 7, it just gives me zeros after the third digit...
Do you know how to configure Fluent to be more precise in the calculation?

Thanks
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Old   January 30, 2013, 11:42
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Maybe, running in double precision may help?
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Old   January 30, 2013, 11:46
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Thomas Hoffmann
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it actually is with double precision...
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Old   January 31, 2013, 06:56
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Paritosh Vasava
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Then I think this 'stair step' behaviour is due to the mesh in y-direction. Did you use boundary layer?
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