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The supercritical composition of a plasma model with cold positive ions in the presence of a two-temperature electron population is investigated, initially by a reductive perturbation approach, under the combined requirements that there be…

斑图形成与孤子 · 物理学 2016-04-13 Frank Verheest , Carel P. Olivier , Willy A. Hereman

The authors of the paper "The third-order perturbed Korteweg-de Vries equation for shallow water waves with a non-flat bottom" [1] claim that they have derived the full third order perturbed KdV equation for the case of uneven bottom. We…

流体动力学 · 物理学 2018-04-06 Piotr Rozmej , Anna Karczewska

The Cauchy problem for the Burgers equation with a small dissipation and an initial weak discontinuity and the Cauchy problem with a large initial gradient for a quasilinear parabolic equation and for the Korteweg-de Vries (KdV) equation…

数学物理 · 物理学 2015-05-06 Sergei V. Zakharov

The distance between the solutions to the integrable Korteweg-de Vries (KdV) equation and a broad class of non-integrable generalized KdV (gKdV) equations is estimated in appropriate Sobolev spaces. This family of equations includes, as…

偏微分方程分析 · 数学 2026-02-06 Nikos I. Karachalios , Dionyssios Mantzavinos , Jeffrey Oregero

We study the small dispersion limit for the Korteweg-de Vries (KdV) equation $u_t+6uu_x+\epsilon^{2}u_{xxx}=0$ in a critical scaling regime where $x$ approaches the trailing edge of the region where the KdV solution shows oscillatory…

数学物理 · 物理学 2009-12-01 T. Claeys , T. Grava

The Korteweg-de Vries equation is known to yield a valid description of surface waves for waves of small amplitude and large wavelength. The equation features a number of conserved integrals, but there is no consensus among scientists as to…

数学物理 · 物理学 2019-03-27 Samer Israwi , Henrik Kalisch

We revise the solutions of the forced Korteweg-de Vries equation describing a resonant interaction of a solitary wave with external pulse-type perturbations. In contrast to previous works where only the limiting cases of a very narrow…

斑图形成与孤子 · 物理学 2019-03-25 Andrei Ermakov , Yury Stepanyants

A Korteweg-de Vries (KdV) equation including the effect of Landau damping is derived to study the propagation of weakly nonlinear and weakly dispersive ion acoustic waves in a collisionless unmagnetized plasma consisting of warm adiabatic…

等离子体物理 · 物理学 2018-10-31 Sandip Dalui , Anup Bandyopadhyay

In recent papers, denoted by MG24, MG25 in this text, we used the Korteweg-de Vries (KdV) equation and its two-dimensional extension, the Kadomtsev-Petviashvili (KP) equation to describe the evolution of wind-driven water wave packets in…

流体动力学 · 物理学 2025-06-03 Montri Maleewong , Roger Grimshaw

A unidirectional reduction of the deep-water surface gravity wave problem is derived in physical space using real variables. By employing a near-identity canonical transformation, cubic interactions are eliminated from the Hamiltonian, with…

流体动力学 · 物理学 2026-05-26 Päivo Simson

The lattice potential Korteweg-de Vries equation (LKdV) is a partial difference equation in two independent variables, which possesses many properties that are analogous to those of the celebrated Korteweg-de Vries equation. These include…

可精确求解与可积系统 · 物理学 2011-11-22 Samuel Butler , Nalini Joshi

It is known that there are nonlinear wave equations with localized solitary wave solutions. Some of these solitary waves are stable (with respect to a small perturbation of initial data) and have nonzero spin (nonzero intrinsic angular…

斑图形成与孤子 · 物理学 2009-11-13 Q. E. Hoq

The logarithmic KdV (log-KdV) equation admits global solutions in an energy space and exhibits Gaussian solitary waves. Orbital stability of Gaussian solitary waves is known to be an open problem. We address properties of solutions to the…

偏微分方程分析 · 数学 2016-07-08 Dmitry E. Pelinovsky

The KP-I equation arises as a weakly nonlinear model equation for gravity-capillary waves with Bond number $\beta>1/3$, also called strong surface tension. This equation has recently been shown to have a family of nondegenerate, symmetric…

偏微分方程分析 · 数学 2025-12-18 Mats Ehrnström , Mark D. Groves

In this paper we study the effect of rotation on nonlinear wave phenomena in weakly dispersive media modeled by the Korteweg-de Vries equation on the real line. It is well known that smoothing in the case of the KdV equation with periodic…

偏微分方程分析 · 数学 2024-04-09 M. B. Erdogan , N. Tzirakis

We develop modulation theory for undular bores (dispersive shock waves) in the framework of the Gardner, or extended Korteweg--de Vries, equation, which is a generic mathematical model for weakly nonlinear and weakly dispersive wave…

斑图形成与孤子 · 物理学 2013-03-26 A. M. Kamchatnov , Y. -H. Kuo , T. -C. Lin , T. -L. Horng , S. -C. Gou , R. Clift , G. A. El , R. H. J. Grimshaw

We study large-amplitude, very oblique Alfv\'en waves at low $\beta$, with small gradient length scales, comparable to the ion inertial scale $d_i$. Such waves have large density fluctuations, and slight dispersion from finite-frequency and…

等离子体物理 · 物理学 2023-11-10 Alfred Mallet

Stochastically perturbed Korteweg-de Vries (KdV) equations are widely used to describe the effect of random perturbations on coherent solitary waves. We present a collective coordinate approach to describe the effect on coherent solitary…

斑图形成与孤子 · 物理学 2021-08-11 Madeleine Cartwright , Georg A. Gottwald

In this paper, numerical and solitonic solutions of Korteweg de Vries(KdV) and Korteweg de Vries-Burger's (KdVB) equations with initial and boundary conditions are calculated by sinc-collocation method. The basis of method is sinc…

数值分析 · 数学 2013-03-26 Mehri Sajjadian

A single incompressible, inviscid, irrotational fluid medium bounded above by a free surface is considered. The Hamiltonian of the system is expressed in terms of the so-called Dirichlet-Neumann operators. The equations for the surface…

可精确求解与可积系统 · 物理学 2024-09-06 Rossen I. Ivanov