
Session Ci - Vortex Dynamics.
ORAL session, Sunday, November 23
309, Moscone Center
A vortex sheet model is used to numerically study vortex ring dynamics. A Lagrangian numerical method and an adaptive tree-code is used to simulate the smoothed vortex sheet. Results are presented for azimuthal perturbations of an initially axisymmetric vortex ring and for the off-axis collision of two vortex rings.