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In the paper possible local and nonlocal reductions of the Ablowitz-Kaup-Newell-Suger (AKNS) hierarchy are collected, including the Korteweg-de Vries (KdV) hierarchy, modified KdV hierarchy and their nonlocal versions, nonlinear…

可精确求解与可积系统 · 物理学 2017-11-15 Kui Chen , Xiao Deng , Senyue Lou , Da-jun Zhang

Uniform estimates for the decay structure of the $n$-soliton solution of the Korteweg-deVries equation are obtained. The KdV equation, linearized at the $n$-soliton solution is investigated in a class $\WW$ consisting of sums of travelling…

solv-int · 物理学 2018-08-29 M. Haragus-Courcelle , D. H. Sattinger

We analyze shallow water wind waves in Currituck Sound, North Carolina and experimentally confirm, for the first time, the presence of $soliton$ $turbulence$ in ocean waves. Soliton turbulence is an exotic form of nonlinear wave motion…

The algebraic geometric approach to $N$-component systems of nonlinear integrable PDE's is used to obtain and analyze explicit solutions of the coupled KdV and Dym equations. Detailed analysis of soliton fission, kink to anti-kink…

斑图形成与孤子 · 物理学 2015-06-26 Mark S. Alber , Gregory G. Luther , Charles A. Miller

The KdV equation can be derived in the shallow water limit of the Euler equations. Over the last few decades, this equation has been extended to include both higher order effects (KdV2) and an uneven river bottom. Although this equation is…

流体动力学 · 物理学 2021-01-19 Eryk Infeld , Anna Karczewska , George Rowlands , Piotr Rozmej

The formation of the leading-edge vortex (LEV) is a key feature of unsteady flows past aerodynamic surfaces, but is expensive to model in high fidelity computations. Low-order methods based on discrete vortex elements are able to capture…

流体动力学 · 物理学 2022-06-24 Pedro Hernandez Gelado , Kiran Kumar Ramesh

We study the existence, formation and dynamics of gray solitons for an extended quintic nonlinear Schr\"odinger (NLS) equation. The considered model finds applications to water waves, when the characteristic parameter $kh$ - where $k$ is…

斑图形成与孤子 · 物理学 2019-02-13 F. Tsitoura , T. P. Horikis , D. J. Frantzeskakis

By means of magnetohydrodynamic equations in a non relativistic multi fluid framework, we study the behavior of small amplitude perturbations in cold Quark Gluon Plasmas (QGP). Magnetohydrodynamic equations, along with the QGP equation of…

高能物理 - 理论 · 物理学 2018-01-01 Azam Ghaani , Kurosh Javidan

We consider two nonlocal variational models arising in physical contexts. The first is the Thomas-Fermi-Dirac-von Weiz\"{a}cker (TFDW) model, introduced in the study of ionization of atoms and molecules, and the second is the liquid drop…

偏微分方程分析 · 数学 2021-02-11 Lorena Aguirre Salazar , Stan Alama , Lia Bronsard

Molecular dynamics (MD) simulations have been carried out to investigate the slip of fluid in the lid driven cavity flow where the no-slip boundary condition causes unphysical stress divergence. The MD results not only show the existence of…

流体动力学 · 物理学 2007-05-23 Tiezheng Qian , Xiao-Ping Wang

The KdV equation can be derived in the shallow water limit of the Euler equations. Over the last few decades, this equation has been extended to include higher order effects. Although this equation has only one conservation law, exact…

斑图形成与孤子 · 物理学 2018-04-06 Piotr Rozmej , Anna Karczewska , Eryk Infeld

We theoretically investigate the nucleation of liquid droplets from vapor in the presence of a charged spherical particle. Due to field gradients, sufficiently close to the critical point of the vapor--gas system, the charge destabilizes…

化学物理 · 物理学 2021-11-04 Roni Kroll , Yoav Tsori

The propagation of small amplitude stationary profile nonlinear solitary waves in a pair plasma is investigated employing the reductive perturbation technique via well-known Korteweg de Vries (KdV) and modified KdV (mKdV) equations, we tend…

等离子体物理 · 物理学 2024-06-19 Tanvir I. Rajib

The Kadomtsev-Petviashvili (KP) nonlinear wave equation is the three dimensional generalization of the Korteveg-de Vries (KdV) equation. We show how to obtain the cylindrical KP (cKP) and cartesian KP in relativistic fluid dynamics. The…

数学物理 · 物理学 2013-05-07 D. A. Fogaça , F. S. Navarra , L. G. Ferreira Filho

We study the thermally activated oscillations, or capillary waves, of a neutral metal cluster within the liquid drop model. These deformations correspond to a surface roughness which we characterize by a single parameter $\Delta$. We derive…

凝聚态物理 · 物理学 2009-10-30 N. Pavloff , C. Schmit

We introduce several new models whose common feature is to take into account effects from topological vorticity. The macroscopic unknown is driven by a dissipative anomalous diffusion (of SQG-type) and is coupled with the orientation of the…

偏微分方程分析 · 数学 2026-01-27 Fanghua Lin , Yannick Sire , Yantao Wu , Yifu Zhou

In this brief communication, we present an exact analytic nonlinear dispersion relation (NLDR) for the dust acoustic waves using the Korteweg-de Vries (KdV) model. The NLDR agrees with the spectrum of spatio-temporal evolution obtained from…

等离子体物理 · 物理学 2024-05-28 Farida Batool , Ajaz Mir , Sanat Tiwari , Abhijit Sen

All solutions of the Korteweg -- de Vries equation that are bounded on the real line are physically relevant, depending on the application area of interest. Usually, both analytical and numerical approaches consider solution profiles that…

数学物理 · 物理学 2015-06-16 Thomas Trogdon , Bernard Deconinck

A simple exactly solvable kinetic model for the non-linear inelastic hard sphere Boltzmann equation is used to explore the relevance of hydrodynamics for a granular gas. The equation predicts a non-trivial homogeneous cooling state (HCS),…

软凝聚态物质 · 物理学 2007-05-23 Aparna Baskaran , James W. Dufty

In this work we revisit the topic of existence of hydrodynamic shock waves in a cold weakly collisional plasma. For this purpose we consider the well established Adlam-Allen model with the addition of a dashpot term associated with the…

斑图形成与孤子 · 物理学 2025-03-24 Marco Calabrese , Vassilis Koukouloyannis , Sibtain Abbas , Gohar Abbas , Panayotis Kevrekidis