[klaus_]

Hi. I try to find coefficient of lift(Cl) and drag(Cd) of two-dimensional wing. I change the ControlDict as show below. but when I run the simulation always throws --> OpenFOAM fatal error: Could not find rho:rho in database
I have no idea where to put rho:rho

*--------------------------------*- C++ -*----------------------------------*\
| |
| Generated by the CfdOF workbench for FreeCAD |
| https://github.com/jaheyns/CfdOF |
| |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

application simpleFoam;

startFrom startTime;

startTime 0;

stopAt endTime;
deltaT 1;

endTime 200;

writeControl timeStep;

writeInterval 100;

purgeWrite 0;

writeFormat ascii;

writePrecision 15;

runTimeModifiable true;

libs
(
// Needed for availability of porous baffle boundary in potentialFoam
#include "turbulenceLib"
);

functions
{ forceCoeffs
{
type forceCoeffs;

functionObjectLibs ("libforces.so");

outputControl timeStep;
outputInterval 1;

log yes;

patches (Cut);
PName p;
UName U;
rhoName rhoInf;
log true;
rhoInf 1.225; // density of air
CofR (0 0 0); // center of the wing（set to origin）
liftDir (1 0 0);
dragDir (0 0 1);
pitchAxis (0 1 0); // asis of rotaion（z-direction）
magUInf 10; // flow velocity
lRef 1.0; // wing reoresentaive length
Aref 1.0; // wing representaive area
}

}
// ************************************************** *********************** //