论文标题

平面涡流对的紧凑性和稳定性,有规定的冲动

Compactness and stability for planar vortex-pairs with prescribed impulse

论文作者

Burton, G. R.

论文摘要

浓度 - 紧凑度用于证明最大化序列的紧凑性,用于在均匀的平面理想流体流中的对称对称性稳定稳定涡流对,其中要最大化动能,约束集包含所有等效重新重新排列(表示给定函数(表示vorticition)的所有等效重新安排(代表vorticition)的组合(代表vorticition)的组合(均为vortical equipum pecress)。推导了轨道稳定性的一种形式。

Concentration-compactness is used to prove compactness of maximising sequences for a variational problem governing symmetric steady vortex-pairs in a uniform planar ideal fluid flow, where the kinetic energy is to be maximised and the constraint set comprises the set of all equimeasurable rearrangements of a given function (representing vorticity) that have prescribed impulse (lnear momentum). A form of orbital stability is deduced.

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