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Incorrect Cp Value when I used Piecewise-Polynomial Profile

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Old   August 14, 2023, 23:29
Question Incorrect Cp Value when I used Piecewise-Polynomial Profile
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Liam Wan
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I'm trying to use the Piecewise-Polynomal Profile to define Cp of Air, there are 8 temperatue ranges I need to specify. However, from the fourth temperature range, the curve in the dialog box deviates from the curve I plotted in MATLAB, and negative values appear. I have double checked the input values and found no errors. Any ideas?
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Old   August 15, 2023, 03:48
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Liam Wan
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Found the reason... The input value in FLUENT dialog box can only have less than 7 valid numbers, which leads to a huge rounding error.
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