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My forceCoeffs has very serious numerical oscillations |
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July 2, 2023, 22:24
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My forceCoeffs has very serious numerical oscillations
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New Member
Grp
Join Date: Feb 2023
Posts: 14
Rep Power: 2  |
Hello gus！I used the immersion boundary method of foam-extend 4.1 to calculate the fluctuation of the airfoil, and why the calculated thrust coefficient and drag coefficient changed very sharply, not a smooth sine wave.
In addition, when I solved, the number of iterations of the pressure equation was very large, between 400-1000 times, is it because p is inaccurate. Below are my controlDict and fvschems and fvsolutions files. Does anyone until how to fix this？Thank You！ 
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