Metastable states and intermittent switching of small populations of confined point vortices Page: 4 of 30
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SAND95-8488 UC-405
Unlimited Release
Printed July 1995
METASTABLE STATES AND INTERMITTENT
SWITCHING OF SMALL POPULATIONS OF
CONFINED POINT VORTICES
Robert W. Schmieder
Sandia National Laboratories
Livermore, CA 94551 USA
rwschmi@ca.sandia.gov
ABSTRACT
We have found that small populations of point vortices confined
in a box exhibit a variety of new and interesting metastable
collective motions, ranging from rigid body rotation to complete
chaos. These motions are induced by simulated heating and cooling
of the vortices; they do not appear in adiabatic systems. By
judicious choice of vortex circulations, heating and cooling rates,
and box size, we have produced systems that switch intermittently
between several metastable states, that oscillate quasi-periodically,
and that show a variety of interesting collective behaviors that in
some cases are suggestive of biological organisms.
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Schmieder, R.W. Metastable states and intermittent switching of small populations of confined point vortices, report, July 1, 1995; Livermore, California. (https://digital.library.unt.edu/ark:/67531/metadc623236/m1/4/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.