I am modeling a 2 D geometry and need to fix the radial velocity in a circular cavity of fluid as my boundary condition. However in the fluid panel of boundary condition, I get an option only to fix the velocities in cartesian co-ordinates. Can anyone please tell me how to activate the cylindrical components in the fixed values option of fluid panel for a 2-D geometry? Thanks in advance

Did you activate the axisymmetric option ?

If yes, the the x component= axial component, and the y component = the radial component