[khatereh]

Dear friends,
I run a case study in openfoam, i added to controlDict a subfunction for computing Cd and CL,such as,
---------------------------------------------------------------------------------
forceCoeffs_object
{
// rhoInf - reference density
// CofR - Centre of rotation
// dragDir - Direction of drag coefficient
// liftDir - Direction of lift coefficient
// pitchAxis - Pitching moment axis
// magUinf - free stream velocity magnitude
// lRef - reference length
// Aref - reference area
type forceCoeffs;
functionObjectLibs ("libforces.so");
//patches ("body1" "body2" "body3");
type forceCoeffs;
functionObjectLibs ("libforces.so");
//patches ("body1" "body2" "body3");
patches (movingWall);
pName p;
Uname U;
rhoName rhoInf;
rhoInf 1.0;
//// Dump to file
log true;
CofR (0.0 0 0);
liftDir (0 1 0);
dragDir (1 0 0);
pitchAxis (0 0 1);
magUInf 1.0;
lRef 1;
// reference length for moments!!!
Aref 2.0;
// reference area 1 for 2d
outputControl
outputInterval
timeStep;
outputInterval 1;
---------------------------------------------------------------------------------
the program has been run without error,but it did not have output for forceCoefficient!!!
I do not know how i compute these parameters and draw!!!
please help me, thanks

[nimasam]

Dear khatereh
Did you define patch name properly?

[khatereh]

hi,
i am sure for patch name!

[nimasam]

then upload your test , your setup seems perfect