期刊
PHYSICA D-NONLINEAR PHENOMENA
卷 237, 期 14-17, 页码 1905-1911出版社
ELSEVIER
DOI: 10.1016/j.physd.2008.01.003
关键词
inviscid regularization of Euler equations; Birkhoff-Rott regularization; Birkhoff-Rott-alpha; vortex sheet regularization
资金
- BSF [2004271]
- ISF [120/06]
- NSF [DMS-0504619, DMS-0708832]
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [2004271] Funding Source: National Science Foundation
We present an a-regularization of the Birkhoff-Rott equation, induced by the two-dimensional Euler-a equations, for the vortex sheet dynamics. We show that an initially smooth self-avoiding vortex sheet remains smooth for all times under the a-regularized dynamics, provided the initial density of vorticity is an integrable function over the curve with respect to the arc-length measure. (C) 2008 Elsevier B.V. All rights reserved.
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