[NightWing]

Hi all,

As a beginner, I am getting used to OpenFOAM 2.4 version. I would like to compute the drag coefficient for flow over a flat plate. I am using the incompressible isothermal solver icoFoam for that purpose. Is it possible to compute the drag coefficients using icoFOAM?

[coolcrasher]

you can calculate the coefficients by using the function objects in control dict. Just add following code in end of controlDict file and run the simulation.

functions
(
forces
{
type forces;
functionObjectLibs ("libforces.so"); //Lib to load
patches (cylinder); // change to your patch name
rhoInf 1.204; //Reference density for fluid
CofR (0 0 0); //Origin for moment calculations
outputControl timeStep;
outputInterval 100;
}

forceCoeffs
{
type forceCoeffs;
functionObjectLibs ("libforces.so");
patches (cylinder); //change to your patch name
rhoInf 1.204;
CofR (0 0 0);
liftDir (0 1 0);
dragDir (1 0 0);
pitchAxis (0 0 0);
magUInf 0.1;
lRef 1;
Aref 1;
outputControl timeStep;
outputInterval 100;
}
);

Hopefully this will work.