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Intake fan - problem with fan characteristic

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Old   May 13, 2023, 08:35
Default Intake fan - problem with fan characteristic
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I am at the boundary conditions stage in my simulation in ANSYS Fluent and I am encountering a strange problem. I have the inlet as 'intake fan' and when entering the fan characteristic ansys changes the value of the maximum speed to the default '1', any-whatever I enter then after accepting it I return to the characteristic and I see 1 again. Has anyone encountered something similar or has an idea what could be the reason?

On the 1st graphic my characteristic entered, and on the 2nd one 'ansys change' after returning to it (and I accepted mine before, as you can see from the function coefficients).

It is also interesting that ansys draws differently the curve I got in excel and I have its formula that I enter into the program, and the fact that negative values appear on the y-axis in ansys is quite inexplicable to me. Maybe I'm misunderstanding something - please advise.


Graphics:
http://https://drive.google.com/driv...usp=share_link
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