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최규동

Choi, Kyudong
Fluids Analysis Lab.
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Infinite growth in vorticity gradient of compactly supported planar vorticity near Lamb dipole

Author(s)
Choi, KyudongJeong, In-Jee
Issued Date
2022-06
DOI
10.1016/j.nonrwa.2021.103470
URI
https://scholarworks.unist.ac.kr/handle/201301/56988
Citation
NONLINEAR ANALYSIS-REAL WORLD APPLICATIONS, v.65, pp.103470
Abstract
We prove linear in time filamentation for perturbations of the Lamb dipole, which is a traveling wave solution to the incompressible Euler equations in R2. The main ingredient is a recent nonlinear orbital stability result by Abe–Choi. As a consequence, we obtain linear in time growth for the vorticity gradient for all times, for certain smooth and compactly supported initial vorticity in R2. The construction carries over to some generalized SQG equations.
Publisher
Elsevier BV
ISSN
1468-1218
Keyword (Author)
2D Euler equationLamb dipoleStabilityGradient growthLarge time behaviorParticle trajectory
Keyword
SMALL-SCALE CREATIONEXPONENTIAL-GROWTHVORTEX STRUCTURESEULER EQUATIONSEVOLUTIONINSTABILITY

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