[Narita]

Dear all,

I'm now conducting a 2D multiphase flow simulation with Axisymmetric Swirl settings.
I have an surface injection for this case (maybe point injection also works), while I found that there are three velocities to be set: X-velocity, Y-velocity, and Z-velocity.

Could anyone tell me if the Z-velocity in the injection is the same thing as the 'swirl velocity' at the velocity inlet boundary?
And is the X/Y-velocity the axial/radial velocity?

I doubt if I was right, because when I set Z-velocity to 100 m/s, and then tracked the particles, I found the swirl velocity of the injected particles was only 40m/s near the injection surface.

Many thanks!!!