The flow field in an unbaffled stirred tank with an off-center Rushton turbine is shown.
The flow is shown using iso-surfaces of vorticity colored by velocity magnitude.
A precessing vortex develops.
The simulation was performed with Ansys Fluent.
More detail can be found in Effect of the shaft eccentricity on the hydrodynamics of unbaffled stirred tanks.
Iso-surface of vorticity magnitude at 50 1/s.
Iso-surface of vorticity magnitude at 25 1/s.