Abstract
The flow field induced in a cylindrical container by the rotation of the bounding surfaces is highly vortical. If the bounding surfaces (i.e. the two end walls and the side wall) are rotated at different angular velocities, a meridional flow develops due to the tilting and stretching of the axial vorticity created by the rotation of the bounding surfaces. In the present study, the flow field induced by the rotation of one end wall and the side wall is studied numerically for a range of Reynolds numbers and ratios of the side wall to the end wall rotation rate. It is shown that rotating the side wall in either the same direction or the opposite direction as the rotation of the end wall tends to inhibit the formation of separation bubbles on the axis of the container.
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