论文标题
在集中的旅行涡流对上,有规定的冲动
On concentrated traveling vortex pairs with prescribed impulse
论文作者
论文摘要
在本文中,我们考虑了与规定的冲动相关的限制最大化问题。我们证明了最大化剂的存在,稳定性和渐近行为,因此获得了一个稳定的行进涡流对系列,即接近具有相同尺寸和相反符号的一对点涡旋。作为推论,我们对Burton的涡流对获得了精细的渐近估计,并具有巨大的冲动。对于非浓缩情况,我们证明了Chaplygin-Lamb偶极子的稳定性形式。
In this paper, we consider a constrained maximization problem related to planar vortex pairs with prescribed impulse. We prove existence, stability and asymptotic behavior for the maximizers, hence obtain a family of stable traveling vortex pairs approaching a pair of point vortices with equal magnitude and opposite signs. As a corollary, we get fine asymptotic estimates for Burton's vortex pairs with large impulse. For the non-concentrated case, we prove a form of stability for the Chaplygin-Lamb dipole.