How to find Cd & Cl in Motorcycle tutorial
 

Hello,
I’m a new OpenFoam user

since I'm able to configure an run simple OpenFoam cases, I went through the motorBike tutorial Everything worked .So I don’t know how to find Cd(drag coefficient) and Cl(lift coefficient) on this tutorial .I would be thankful if there anyone who can help me.

Here is another example of the forces utility parameters that you need to edit for the motorBike Tut and add to the end of the controlDict file.

functions
(
forces
{
type forces;
functionObjectLibs ("libforces.so"); // lib to load
patches (pod); // patch name. for multiple patches, seperate patch names by a space
pName p;
UName U;
rhoName rhoInf;
log true;
rhoInf 1.225; // Reference density for fluid - changed to SL air from 1.204
CofR (0.5588 0 -0.635); //for moment calc
outputControl timeStep;
outputInterval 1;
}

forceCoeffs
{
type forceCoeffs;
functionObjectLibs ("libforces.so");
patches (pod);
pName p;
UName U;
rhoName rhoInf;
log true;
rhoInf 1.225;
CofR (0.5588 0 -0.635); //edit for Cm
liftDir (0 0 -1);
dragDir (-1 0 0);
pitchAxis (0 1 0);
magUInf 89.41;
lRef 9.8; // ref length
Aref 2.2; // X-section of body
outputControl timeStep;
outputInterval 1;
}
);

Thank you very much