Shear Reduction of 2D Point Vortex Diffusion
Final rept. 15 Apr 2001-31 Mar 2002
CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF PHYSICS
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Theory and simulations establish the effects of shear on the collisional diffusion of a 2D point vortex gas. For finite shear, the diffusion is considerably smaller than previous zero-shear theories predict, scaling inversely with the shear. Surprisingly, changing the sign of the applied shear changes the diffusion by an order of magnitude.
- Plasma Physics and Magnetohydrodynamics