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"Buffet" having nan value in su2

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Old   October 18, 2022, 12:27
Default "Buffet" having nan value in su2
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chandan
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Greetings everyone
I am new user of SU2. I am trying to run a cfg file for mesh generated through pointwise for SD8020 airfoil with a zero thickness flap at 0.6c with flap legth 0.3c.
On running simulation in su2 its history file is showing nan for all rows of "Buffet" column causing divergence in the simualtion. I am not able to understand that what is this "Buffet" and how can i remove this bug.
please help
regards
chandan
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