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Long-time behavior of logarithmic spiral vortex sheets with two branches

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arxiv 2312.02072 v1 pith:4BLLY5V6 submitted 2023-12-04 math.AP

Minki Cho This is my paper · ORCID
classification math.AP
keywords behaviorbrancheslogarithmiclong-timesheetsspiralvortexappear
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abstract

We consider logarithmic spiral vortex sheets consisting of two branches. Based on some simple assumptions that appear true by numerical computations, we fully classify their long-time behavior and asymptotics, where in all cases each branch decays to $0$ or blows up in finite time. Furthermore, we present illustrations determining which range of initial data corresponds to each case. We also determine the asymptotic stability of the symmetric and asymmetric self-similar spirals.

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  1. Self-similar algebraic spiral vortex sheets of 2-D incompressible Euler equations

    math.AP 2025-05 conditional novelty 8.0 of 10

    For all sufficiently large m, the authors solve the Birkhoff-Rott equation near Kaden's algebraic spiral and prove the resulting m-fold sheet is a weak solution of the 2-D Euler equations.

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