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In this manuscript, we consider the $3$D Boussinesq equations for stably stratified fluids with the horizontal viscosity and thermal diffusivity and investigate the large time behavior of the solutions. Making use of the anisotropic…

偏微分方程分析 · 数学 2024-10-14 Mikihiro Fujii , Yang Li

The \emph{equations of Boussinesq approximation} (EBA) for an incompressible and inhomogeneous in density fluid are analyzed from a viewpoint of the asymptotic theory. A systematic scaling shows that there is an infinite number of related…

流体动力学 · 物理学 2016-11-15 Vladimir A. Vladimirov , Nasser Al-Salti

In this paper, we study the stability threshold of the two-dimensional Boussinesq equations around the Couette flow in an infinite channel $\mathbb{R} \times [-1, 1]$ under no-slip boundary conditions. We prove that the Couette flow is…

偏微分方程分析 · 数学 2025-12-02 Tao Liang , Jiahong Wu , Xiaoping Zhai

In this work, we revisit the study by M. E. Schonbek [11] concerning the problem of existence of global entropic weak solutions for the classical Boussinesq system, as well as the study of the regularity of these solutions by C. J. Amick…

偏微分方程分析 · 数学 2020-02-03 Luc Molinet , Raafat Talhouk , Ibtissam Zaiter

The static energy encodes all possible information about the thermodynamics and potential energy (and all related forces) of stratified geophysical fluids. In this paper, we develop a systematic methodology, called static energy…

流体动力学 · 物理学 2024-01-25 Remi Tailleux , Thomas Dubos

In this paper, we investigate the asymptotic behaviors of the solutions of nonlinear dynamic systems nearby an equilibrium point, when the nominal parts are subject to non necessarily small perturbations. We show that, under some estimates…

动力系统 · 数学 2020-08-07 Mondher Benjemaa , Wided Gouadri , Mohamed Ali Hammami

The three-dimensional incompressible Boussinesq system is one of the important equations in fluid dynamics. The system describes the motion of temperature-dependent incompressible flows. And the temperature naturally has diffusion.…

偏微分方程分析 · 数学 2022-07-15 Chen Gao , Liqun Zhang , Xianliang Zhang

A higher-order nonlinear Boussinesq system with a time-dependent boundary delay is considered. Sufficient conditions are presented to ensure the well-posedness of the problem by utilizing Kato's variable norm technique and the Fixed-Point…

偏微分方程分析 · 数学 2025-05-02 G. Bautista , R. de A. Capistrano--Filho , B. Chentouf , O. Sierra Fonseca

Exact solutions of the dispersive and modified equations are expressed in terms of special polynomials associated with rational solutions of the fourth Painleve equation, which arises as generalized scaling reductions of these equations.…

可精确求解与可积系统 · 物理学 2009-03-13 Peter A Clarkson , Bryn W M Thomas

We study a system of forced viscous shallow water equations with nontrivial bathymetry in two spatial dimensions. We develop a well-posedness theory for small but arbitrary forcing data, as well as for a fixed data profile but large…

偏微分方程分析 · 数学 2025-02-18 Noah Stevenson , Ian Tice

We study local-time well-posedness and breakdown for solutions of regularized Saint-Venant equations (regularized classical shallow water equations) recently introduced by Clamond and Dutykh. The system is linearly non-dispersive, and…

偏微分方程分析 · 数学 2020-01-08 Jian-Guo Liu , Robert L. Pego , Yue Pu

A class of quasi-variational-hemivariational inequalities in reflexive Banach spaces is studied. The inequalities contain a convex potential, a locally Lipschitz superpotential, and an implicit obstacle set of constraints. Results on the…

偏微分方程分析 · 数学 2023-09-12 Jing Zhao , Stanislaw Migorski , Sylwia Dudek

This paper investigates the asymptotic stability of rarefaction waves for a one-dimensional compressible fluid system, where the Newton's law of viscosity and Fourier's law of heat conduction are replaced by Maxwell's law and Cattaneo's…

偏微分方程分析 · 数学 2026-01-21 Yuxi Hu , Mengran Yuan , Jie Zhang

We consider the modulationally stable version of the Kaup-Boussinesq system which models propagation of nonlinear waves in various physical systems. It is shown that the Whitham modulation equations for this model have a new type of…

斑图形成与孤子 · 物理学 2022-10-12 Sergey K. Ivanov , Anatoly M. Kamchatnov

In this paper, we establish the inviscid damping and enhanced dissipation estimates for the linearized Navier-Stokes system around the symmetric flow in a finite channel with the non-slip boundary condition. As an immediate consequence, we…

偏微分方程分析 · 数学 2025-10-22 Qi Chen , Hao Li , Shunlin Shen , Zhifei Zhang

This paper investigates the stability and large-time behavior of solutions to the rotating Boussinesq system under the influence of a general gravitational potential $\Psi$, which is widely used to model the dynamics of stratified…

偏微分方程分析 · 数学 2025-04-16 Song Jiang , Quan Wang

In this paper the permanent profile waves governed by a Boussinesq-type wave equation are analysed. The model involves displacement-type nonlinearities and dispersion terms. Physically such a model equation describes longitudinal waves…

斑图形成与孤子 · 物理学 2018-11-14 Tanel Peets , Kert Tamm , Päivo Simson , Jüri Engelbrecht

We consider a class of Boussinesq systems of Bona-Smith type in two space dimensions approximating surface wave flows modelled by the three-dimensional Euler equations. We show that various initial-boundary-value problems for these systems,…

经典物理 · 物理学 2009-07-29 Vassilios Dougalis , Dimitrios Mitsotakis , Jean-Claude Saut

By means of an updated renormalization method, we construct asymptotic expansions for unstable manifolds of hyperbolic fixed points in the double-well map and the dissipative H\'enon map, both of which exhibit the strong homoclinic chaos.…

chao-dyn · 物理学 2007-05-23 Shin-itiro Goto , Kazuhiro Nozaki

We develop a general approach to the description of dispersive shock waves (DSWs) for a class of nonlinear wave equations with a nonlocal Benjamin-Ono type dispersion term involving the Hilbert transform. Integrability of the governing…

斑图形成与孤子 · 物理学 2018-03-06 G. A. El , L. T. K. Nguyen , N. F. Smyth