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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)

Rearrangements in steady vortex flows with circulation


Authors: Alan R. Elcrat and Kenneth G. Miller
Journal: Proc. Amer. Math. Soc. 111 (1991), 1051-1055
MSC: Primary 35Q35; Secondary 58D25, 76C05
MathSciNet review: 1043409
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Abstract: It is shown that a steady two-dimensional flow, in which a finite vortex is in equilibrium with the irrotational flow past an obstacle, can be obtained as the solution of a variational problem in the class of rearrangements of a fixed function in $ {L^p}$. The main step is to establish a bound on the support of the vorticity. The advantage of this approach, as in the recent works of Burton, Benjamin, and Auchmuty, is that the profile function of the vorticity is determined by the rearrangement class in which solutions are sought.


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DOI: http://dx.doi.org/10.1090/S0002-9939-1991-1043409-2
PII: S 0002-9939(1991)1043409-2
Article copyright: © Copyright 1991 American Mathematical Society