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Bibliographic Details
Main Authors: Wang, Fatao, Wang, Guodong
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2510.14394
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Table of Contents:
  • We provide a short proof of the $L^2$-orbital stability of a class of explicit steady Euler flows in a disk by establishing a quantitative estimate. The main idea is to exploit the conserved quantities of the Euler equation, including the kinetic energy, the enstrophy, and the moment of fluid impulse. Our result seems to suggest that more radial symmetry leads to stronger instability.