forces: What are magUInf, lRef, Aref?
I want to optimise a wing, hence analyse cl/cd using the forces function but I don't know the meaning of some variables (magUInf, lRef, Aref).
Actually my wing is a hydrofoil therefore the high rhoInf = 1000 kg/m3 for water.
Her the "draft" entries in my controlDict:
functionObjectLibs ("libforces.so"); //Lib to load
patches (stlSurface); // change to your patch name
rhoInf 1000; //Reference density for fluid
CofR (0.15 0 0); //Origin for moment calculations
patches (stlSurface); //change to your patch name
CofR (0 0 0);
liftDir (0 1 0);
dragDir (1 0 0);
pitchAxis (0 0 0);
magUInf 55.5; //?
lRef 0.6; //?
Aref 1; //?
What are magUInf, lRef, Aref?
a.) magUInf is relative velocity between hydrofoil and water.
b.) lRef is length of hydrofoil, which is equal to chord length of hydrofoil profile.
c.) Aref is area of your hydrofoil, which is chord length*span. If you are doing 2D simulation, then span is equal to z coordinate.
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