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We are concerned with supersonic vortex sheets for the Euler equations of compressible inviscid fluids in two space dimensions. For the problem with constant coefficients, in [10] the authors have derived a pseudo-differential equation…

偏微分方程分析 · 数学 2020-08-14 Paolo Secchi

This paper analyzes the space of steady rotating solutions to the two-dimensional incompressible Euler equations nearby vortex patch solutions satisfying a natural nondegeneracy condition. We address the question of desingularization and…

偏微分方程分析 · 数学 2026-05-19 Răzvan-Octavian Radu , Noah Stevenson

We consider the mean-field vortex solutions and their stability within a two-component Bose Einstein condensate in the immiscible limit. A variational approach is employed to study a system consisting of a majority component which contains…

量子气体 · 物理学 2022-10-05 R. Doran , A. W. Baggaley , N. G. Parker

We present full three-dimensional numerical calculations of single vortex states in rotating dipolar condensates. We consider a Bose-Einstein condensate of 52Cr atoms with dipole-dipole and s-wave contact interactions confined in an axially…

量子气体 · 物理学 2009-06-24 M. Abad , M. Guilleumas , R. Mayol , M. Pi , D. M. Jezek

This paper is concerned with two-dimensional, steady, periodic water waves propagating at the free surface of water in a flow of constant vorticity over an impermeable flat bed. The motion of these waves is assumed to be governed both by…

偏微分方程分析 · 数学 2014-04-23 Peter de Boeck

This article investigates the dynamical behaviours of the $n$-vortex problem with vorticity $\mathbf{\Gamma}$ on a Riemann sphere $\mathbb{S}^2$ equipped with an arbitrary metric $g$. From perspectives of Riemannian geometry and symplectic…

动力系统 · 数学 2021-04-07 Qun Wang

This paper is concerned with steady vortex rings in an ideal fluid of uniform density, which are special global axi-symmetric solutions of the three-dimensional incompressible Euler equation. We systematically establish the existence,…

偏微分方程分析 · 数学 2023-12-06 Daomin Cao , Guolin Qin , Weilin Yu , Weicheng Zhan , Changjun Zou

We study isolated, stationary, axially symmetric vortex solutions in (2+1)-dimensional viscous conformal fluids. The equations describing them can be brought to the form of three coupled first order ODEs for the radial and rotational…

高能物理 - 理论 · 物理学 2014-11-21 Jarah Evslin , Chethan Krishnan

By means of variational methods, in this paper, we establish sharp existence results for solutions of the master equations governing `fractional multiple vortices.' In the doubly periodic situation, the conditions for existence are both…

数学物理 · 物理学 2012-04-13 Chang-Shou Lin , Gabriella Tarantello , Yisong Yang

We investigate a steady planar flow of an ideal fluid in a (bounded or unbounded) domain $\Omega\subset \mathbb{R}^2$. Let $\kappa_i\not=0$, $i=1,\ldots, m$, be $m$ arbitrary fixed constants. For any given non-degenerate critical point…

偏微分方程分析 · 数学 2022-05-06 Daomin Cao , Guolin Qin , Changjun Zou

We consider the free boundary problem for a 3-dimensional, incompressible, irrotational liquid drop of nearly spherical shape with capillarity. We study the problem from the beginning, extending some classical results from the flat case…

偏微分方程分析 · 数学 2026-03-31 Pietro Baldi , Vesa Julin , Domenico Angelo La Manna

In this paper, we present rotational and self-similar solutions for the compressible Euler equations in R^3 using the separation method. These solutions partly complement Yuen's irrotational and elliptic solutions in R^3 [Commun. Nonlinear…

数学物理 · 物理学 2014-09-24 Manwai Yuen

We study the uniform solutions to the one-dimensional spinor Bose-Einstein condensates on a ring. These states explicitly display the associated motion of the super-current and the spin rotation, which give rise to fractional winding…

量子气体 · 物理学 2015-06-15 Yong-Kai Liu , Shi-Jie Yang

We explore the bifurcation structure of mode-1 solitary waves in a three-layer fluid confined between two rigid boundaries. A recent study (Lamb, J. Fluid Mech. 2023, 962, A17) proposed a method to predict the coexistence of solitary waves…

流体动力学 · 物理学 2025-09-30 Ricardo Barros , Alex Doak , Wooyoung Choi , Paul Milewski

We study standing wave solutions to nonlinear Schr{\"o}dinger equations, on a manifold with a rotational symmetry, which transform in a natural fashion under the group of rotations. We call these vortex solutions. They are higher…

偏微分方程分析 · 数学 2013-10-04 Jeremy L. Marzuola , Michael E. Taylor

Popov recently discovered a modified version of the Bogomolny equations for abelian Higgs vortices, and showed they were integrable on a sphere of curvature 1/2. Here we construct a large family of explicit solutions, where the vortex…

高能物理 - 理论 · 物理学 2015-06-12 N. S. Manton

In "Global regularity for vortex patches" (Commun. Math. Phys. 1993), Bertozzi and Constantin formulate the vortex patch problem in the level-set framework and prove a priori estimates for this active scalar equation. By extending the tools…

偏微分方程分析 · 数学 2022-11-16 Razvan-Octavian Radu

We give thorough analysis for the rotation functions of the critical orbits from which one can understand bifurcations of periodic orbits. Moreover, we give explicit formulas of the Conley-Zehnder indices of the interior and exterior…

辛几何 · 数学 2017-07-07 Seongchan Kim

We construct co-rotating and traveling vortex sheets for 2D incompressible Euler equation, which are supported on several small closed curves. These examples represent a new type of vortex sheet solutions other than two known classes. The…

偏微分方程分析 · 数学 2021-08-19 Daomin Cao , Guolin Qin , Changjun Zou

The periodic solutions of a type of nonlinear hyperbolic partial differential equations with a localized nonlinearity are investigated. For instance, these equations are known to describe several acoustical systems with fluid-structure…

动力系统 · 数学 2013-06-20 Benjamin Ricaud