[Terp]

Hey all.
I'm a newcomer to openFoam, and trying to get a handle on VOF. I have been modifying the damBreak tutorial in version 1.7.0 and I would like to output the force on an obstacle. In my controlDict, I added:

functions
(
forces
{
type forces;
functionObjectLibs ("libforces.so"); //Lib to load
patches (block); // change to your patch name
rhoName rhoInf;
rhoInf 1000; //Reference density for fluid
CofR (0 0 0);
outputControl outputTime;
//outputInterval 1;
}
);

Running proceeds until it tries to calculate the forces, then it errors out telling me:

--> FOAM FATAL IO ERROR:
keyword nu is undefined in dictionary ".../OpenFOAM/USRNAME-1.7.0/tutorials/multiphase/interFoam/laminar/damBreak/cons
tant/transportProperties"

But in the transportProperties file, nu is defined for both phase 1 and phase 2.

Does the "force" function not work in multiphase? If not, is there an easy way to integrate the pressure over a patch? Seems it would have to be p, not p_rgh.

A search showed that someone else had the same error, but they never mentioned if they got it working. Any help is greatly appreciated!