Courant Number
 

Hello everyone
i have amg solver diverged: pressure coupled and i want to change courant number. i want to put in the equation of courant number the velocities of the three inlets that i have and to sum them. As regards the delta x i believe that is the element size of meshing but i dont know which element size is appropriate. The max or min? Is this thought right?
Also i meet two courant number, the one is at the tab of 'solutions controls'(default 200), the other is the global courant number(default 2) in the tab of 'run calculation' when you use the option variable for the time step.which type of courant number is ti estimated from the equation c=u*Dt/DX? Can anyone help me with this problem ?
thanks and sorry for the english