Planar Vortices 1.0

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Planar Vortices is a small, simple application that allows users to investigate the planar vortex flow.

Some suggestions for experiments:
Random configurations:
· press the play button
· press "e", scale or move the image by dragging with middle or left mouse to follow the moving vortices
· press the "Reset" button to start with a new configuration

Specific configurations:
· choose the number of vortices by changing the number labled "control points" and "e" to encompass the image around the vortices
· move vortices by dragging with the right mouse
· select vortices with left mouse click
· use the slider at the bottom to change the vorticity of the selected vortices
· use the "flip" button to only change the sign of the vorticity of the select vortices
· use the "zero" button to get some particles with zero vorticity

Leapfrogging:
· choose 4 vortices and scale the whole plane by dragging with the middle mouse on the background so that the plane is roughly 8 times as large as the distance of the vortices
· move the 4 vortices to the upper right corner (dragging the background with left mouse)
· select all 4 vertices and change the vorticity (slider at the bottom) to a positiv value so that the diameter of the vortices equals their distance
· deselect (left mouse click) the 2 lower right vortices and press the "flip" button, so that the 2 upper left vortices have negative vorticity
· press play (here is a small mpeg (1.6MiB) movie or animated gif (2MiB) )