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How to read pressure drag and frictional drag

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Old   February 3, 2022, 23:29
Smile How to read pressure drag and frictional drag
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Zhenkai Zhang
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Hello everyone
I am tring to seperate drag into pressure drag and frictional drag. But I cannot find any of them.
My history output only have CD, CL, CSF, CM(x, y, z), CF(x,y,z),CEff. To be honest,I even have no idea what does the CSF and CEff mean.

Thank you if you know any of these questions, hope you all are doing fine and happy 2022.
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Old   February 7, 2022, 05:19
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Jose Daniel
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Hi,

If you write WRT_FORCES_BREAKDOWN= YES in the config file you should get a file called forces_breakdown.dat and you'll see the pressure/viscous forces separation.

CSF is the Side Force Coefficient, but I am not sure what CEff stands for
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Old   February 7, 2022, 06:40
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Pedro Gomes
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It's the efficiency coefficient, CL / CD
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ceff, csf, drag, drag distribution, friction

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