[chenhuyun]

Hi all,

I am trying to simulate the fluid dynamics of a mixing tank stirred by an impeller, with the goal of understanding the shear stress on the fluid caused by the impeller rotation. I have set the region around the impeller blade as the rotating zone, and the rest of the tank fluid as the stationary zone.

And for the cell zone conditions, I assigned the rotating zone to have an absolute rotating velocity while the stationary zone stayed stationary relative to the adjacent zone.

However, after running the calculations and viewing the contours, it appears that the rotational motion caused by the impeller did not translate into the stationary zone. Resulting in a uniform color of velocity in the stationary zone, with a concentric color gradient in the rotating zone.

In SpaceClaim, the two fluid zones are set to have shared topography, resulting in a conformal mesh interface.

I have no idea how I should go about making the two zones communicate with each other in Fluent in order to also get the stationary zone moving.

Will someone please provide me guidance?