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- Choi, Kyudong
- Fluids Analysis Lab.
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Growth of perimeter for vortex patches in a bulk
- Author(s)
- Choi, Kyudong, Jeong, In-Jee
- Issued Date
- 2021-03
- Citation
- APPLIED MATHEMATICS LETTERS, v.113, pp.106857
- Abstract
- We consider the two-dimensional incompressible Euler equations. We construct vortex patches with smooth boundary on T-2 and R-2 whose perimeter grows with time. More precisely, for any constant M > 0, we construct a vortex patch in T-2 whose smooth boundary has length of order 1 at the initial time such that the perimeter grows up to the given constant M within finite time. The construction is done by cutting a thin slit out of an almost square patch. A similar result holds for an almost round patch with a thin handle in R-2. (c) 2020 Elsevier Ltd. All rights reserved.
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- ISSN
- 0893-9659
- Keyword (Author)
- 2D Euler, Vortex patch, Stability, Perimeter, Large time behavior, Particle trajectory
- Keyword
- VORTICITY GRADIENT, EXPONENTIAL-GROWTH, REGULARITY, STABILITY
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