Which direction is positive direction in moment coeffs?
hello everyone.
I obtained Cd, Cl, Cm using execFlowFunctionObjects. ------------------------------------------------------------------------------------------ forcesCoeffs { type forceCoeffs; functionObjectLibs ( "libforces.so" ); // lib to load outputControl timeStep; outputInterval 1; patches ( wall // change to your patch name ); // name of fields pName p; UName U; log true; // dump to file rhoName rhoInf; rhoInf 1.25; CofR ( 2.3 0.7569 0 ); liftDir ( 0 1 0 ); dragDir ( 1 0 0 ); pitchAxis ( 0 0 1 ); magUInf 1.43; lRef 0.3537; Aref 0.3537; ----------------------------------------------------------------- my case is something like airfoil. I set pitchAxis( 0 0 1 ). in this case, which direction is positive in Cm?? clockwise? or countclockwise? please help me |
help me...
anybody help me...
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Hi wes,
I know this is years later but this same issue of sign conventions came up in my Masters' project recently - I'm posting here in case anyone should also come across it. Quote:
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