[alessio.nz]

Hi,

Is there a paper/document which explains the meaning of the cylindricalInletVelocity Boundary Condition for OpenFOAM? I need to set up an inlet velocity in a tube with the following features: 133 m/s axial velocity, 0 m/s radial, 77 m/s tangential (clockwise). I tried to use the following BC available but there are some lines I don't get, like: axis (0 0 1) , centre (0 0 0).

Can someone help me?

The BC is the following:

type cylindricalInletVelocity;
axialVelocity 133;
tangentialVelocity 77;
centre (0 0 0); //by default (0 0 0)
axis (0 0 1);
rpm 0;
radialVelocity 0;
value uniform (0 77 133);