Abstract
The integral measures employed in the present study show that the strength of the swirling flow differs among the four subchannels examined in the present study. The lateral velocities in subchannel 6 are larger than in subchannels 5,7,and 10. In addition, the angular momentum in subchannel 6 has the slowest spatial decay. As the flow develops in the streamwise direction, the vortices in subchannels 5,6,and 7 migrate toward the southeast rod. The radial profiles of azimuthal velocity in subchannels 5,6,and 7 are modeled using the analytical form of the azimuthal velocity for a Lamb-Oseen vortex.
