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We show existence of global strong solutions with large initial data on the irrotational part for the shallow-water system in dimension $N\geq 2$. We introduce a new notion of \textit{quasi-solutions} when the initial velocity is assumed to…

Analysis of PDEs · Mathematics 2012-01-27 Boris Haspot

Our interest itself of this paper is strongly inspired from an open problem in the paper [1] published by D'Abbicco. In this article, we would like to study the Cauchy problem for a weakly coupled system of semi-linear structurally damped…

Analysis of PDEs · Mathematics 2019-11-12 Tuan Anh Dao

In this paper, we investigate the global existence and uniqueness of strong solutions to 2D Boussinesq system with anisotropic thermal diffusion or anisotropic viscosity and with striated initial data. Using the key idea of Chemin to solve…

Analysis of PDEs · Mathematics 2020-01-29 Marius Paicu , Ning Zhu

Existence of global regular solution branches of the Boltzmann Cauchy problem with continuously differentiable data in phase space dimension $2d\geq 6$ with polynomial decay at infinity of order greater than $2d$ is proved. There are data…

Analysis of PDEs · Mathematics 2016-01-07 Jörg Kampen

New results are obtained for global regularity and long-time behavior of the solutions to the 2D Boussinesq equations for the flow of an incompressible fluid with positive viscosity and zero diffusivity in a smooth bounded domain. Our first…

Analysis of PDEs · Mathematics 2016-08-24 Ning Ju

Initial-boundary value problems for the $n$-dimensional ($n$ is a natural number from the interval [2,7]) Kuramoto-Sivashinsky equation posed on smooth bounded domains in $\mathbb{R}^n$ were considered. The existence and uniqueness of…

Analysis of PDEs · Mathematics 2022-05-24 N. A. Larkin

In this paper, we consider global strong solutions and uniform-in-time vanishing damping limit for the inviscid Oldroyd-B model in R^d, where d=2 and 3. The well-recognized problem of the global existence of smooth solutions for the 2D…

Analysis of PDEs · Mathematics 2024-10-15 Xinyu Cheng , Zhaonan Luo , Zhaojie Yang , Cheng Yuan

We consider surface quasi-geostrophic equation with dispersive forcing and critical dissipation. We prove global existence of smooth solutions given sufficiently smooth initial data. This is done using a maximum principle for the solutions…

Analysis of PDEs · Mathematics 2015-05-13 Alexander Kiselev , Fedor Nazarov

This paper investigates the global existence and the decay rate in time of a solution to the Cauchy problem for an incompressible Oldroyd model with a deformation tensor damping term. There are three major results. The first is the global…

Analysis of PDEs · Mathematics 2017-05-15 Baoquan Yuan , Yun Liu

We consider the Cauchy problem for a damped Euler-Maxwell system with no ionic background. For smooth enough data satisfying suitable so-called dispersive conditions, we establish the global in time existence and uniqueness of a strong…

Analysis of PDEs · Mathematics 2024-02-02 Bernard Ducomet , Šárka Nečasová , John Sebastian H. Simon

The Comments are devoted to the paper 'Derivation of lump solutions to a variety of Boussinesq equations with distinct dimensions' (Int J Numer Methods Heat Fluid Flow. 2022;32:3072{3082), in which three new generalizations of the classical…

Mathematical Physics · Physics 2024-03-05 Roman Cherniha

We study the compressible quantum Navier-Stokes (QNS) equations with degenerate viscosity in the three dimensional periodic domains. On the one hand, we consider QNS with additional damping terms. Motivated by the recent works [Li-Xin,…

Analysis of PDEs · Mathematics 2020-01-08 Boqiang Lü , Rong Zhang , Xin Zhong

In two and three space dimensions, and under suitable assumptions on the initial data, we show global existence for a damped wave equation which approaches, in some sense, the Navier-Stokes problem. The proofs are based on a refined energy…

Analysis of PDEs · Mathematics 2013-10-08 Imène Hachicha

We study the Cauchy problem for the cubic nonlinear Schroedinger equation, perturbed by (higher order) dissipative nonlinearities. We prove global in-time existence of solutions for general initial data in the energy space. In particular we…

Analysis of PDEs · Mathematics 2009-11-24 Paolo Antonelli , Christof Sparber

A fundamental open problem in the theory of the compressible Navier-Stokes equations is whether regular spherically symmetric flows can develop singularities, such as cavitation or implosion, in finite time. A formidable challenge lies in…

Analysis of PDEs · Mathematics 2026-05-07 Gui-Qiang G. Chen , Jiawen Zhang , Shengguo Zhu

In this article we consider the Boussinesq system supplemented with some dissipation terms. These equations model the propagation of a waterwave in shallow water. We prove the existence of a global smooth attractor for the corresponding…

Analysis of PDEs · Mathematics 2007-05-23 Mostafa Abounouh , Abdelghafour Atlas , Olivier Goubet

It is shown that if the system of the Euler equations has a special global in time smooth solution with the linear profile of velocity, then another solutions with Cauchy data, close in the Sobolev norm to the initial data of the given…

Analysis of PDEs · Mathematics 2007-05-23 Olga S. Rozanova

This paper aims at the global regularity problem concerning the 2D incompressible Boussinesq equations with general critical dissipation. The critical dissipation refers to $\alpha +\beta=1$ when $\Lambda^\alpha \equiv…

Analysis of PDEs · Mathematics 2014-10-14 Quansen Jiu , Changxing Miao , Jiahong Wu , Zhifei Zhang

In this paper, we study the ill-posedness issue for the generalized improved Boussinesq equation. In particular we prove there is norm inflation with infinite loss of regularity at general initial data in $\langle \nabla…

Analysis of PDEs · Mathematics 2023-06-27 Pierre de Roubin

\rm We obtain the global smooth effects for the solutions of the linear Schr\"odinger equation in anisotropic Lebesgue spaces. Applying these estimates, we study the Cauchy problem for the generalized elliptical and non-elliptical…

Analysis of PDEs · Mathematics 2008-12-09 Wang Baoxiang , Han Lijia , Huang Chunyan