Point Vortices
Planar system applet
Vortex applet
(java applet; code written by compter science students)
On the sphere
Relative equilibria of point vortices on the sphere
(joint with Chjan Lim and Mark Roberts): we use symmetry methods to show the existence of many symmetric configurations of point vortices.
Point vortices on the sphere: stability of symmetric relative equilibria
(with Frédéric Laurent-Polz and Mark Roberts)
Stability diagrams
for configurations of point vortices on the sphere
To be viewed in conjunction with this paper
Other vortex papers
Vortex dynamics on a cylinder
(with Tadashi Tokieda)
Maple
Maple code