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We investigate the instability and stability of specific steady-state solutions of the two-dimensional non-homogeneous, incompressible, and viscous Navier-Stokes equations under the influence of a general potential $f$. This potential is…

偏微分方程分析 · 数学 2025-03-12 Liang Li , Tao Tan , Quan Wang

The Navier-Stokes motions in cylindrical domain with Navier boundary conditions are considered. First the existence of global regular two-dimensional solutions are proved. The solutions are bounded by the same constant for all time.…

偏微分方程分析 · 数学 2015-10-15 Wojciech Zajaczkowski

The potential flow of an incompressible inviscid heavy fluid over a light one is considered. The integral version of the method of matched asymptotic expansion is applied to the construction of the solution over long intervals of time. The…

流体动力学 · 物理学 2015-06-17 V. M. Cherniavski , Yu. M. Shtemler

For solution $u(x,t)$ to degenearte parabolic equations in a bounded domain $\Omega$ with homogenous boundary condition, we consider backward problems in time: determine $u(\cdot,t_0)$ in $\Omega$ by $u(\cdot,T)$, where $t$ is the time…

偏微分方程分析 · 数学 2023-05-02 Piermarco Cannarsa , Masahiro Yamamoto

In our previous work, we have established the existence of transonic characteristic discontinuities separating supersonic flows from a static gas in two-dimensional steady compressible Euler flows under a perturbation with small total…

偏微分方程分析 · 数学 2015-06-11 Gui-Qiang Chen , Vaibhav Kukreja , Hairong Yuan

In this paper, we establish the asymptotic stability of the steady-state for a 1-D stochastic Euler-Poisson equations with Ohmic contact boundary conditions forced by the Wiener process. We utilize Banach's fixed point theorem and the a…

偏微分方程分析 · 数学 2025-06-05 Yachun Li , Ming Mei , Lizhen Zhang

We introduce a Langevin equation characterized by a time dependent drift. By assuming a temporal power-law dependence of the drift we show that a great variety of behavior is observed in the dynamics of the variance of the process. In…

统计力学 · 物理学 2009-10-31 Fabrizio Lillo , Rosario N. Mantegna

We discuss the irreversibility, nonlocality, and fluctuations, as well as the Lyapunov and hydrodynamic instabilities characterizing atomistic, smooth-particle, and finite-difference solutions of the two-dimensional Rayleigh-B\'enard…

统计力学 · 物理学 2012-05-22 Wm. G. Hoover , Carol G. Hoover

A body $\mathscr B$ is started from rest by translational motion in an otherwise quiescent Navier-Stokes liquid filling the whole space. We show, for small data, that if after some time $\mathscr B$ reaches a spinless oscillatory motion of…

偏微分方程分析 · 数学 2020-01-22 Giovanni P. Galdi , Toshiaki Hishida

In this article, stabilization result for the viscoelastic fluid flow problem governed by Kelvin-Voigt model, that is, convergence of the unsteady solution to a steady state solution is proved under the assumption that linearized…

数值分析 · 数学 2018-12-07 Sudeep Kundu , Amiya K. Pani

In this note we investigate the existence of time-periodic solutions to the $p$-Navier-Stokes system in the singular case of $p\in (1, 2)$, that describes the flows of an incompressible shear-thinning fluid. In the $3D$ space-periodic…

偏微分方程分析 · 数学 2019-05-01 Anna Abbatiello , Paolo Maremonti

This report presents a low computational and cognitive complexity, stable, time accurate and adaptive method for the Navier-Stokes equations. The improved method requires a minimally intrusive modification to an existing program based on…

数值分析 · 数学 2019-02-01 Victor DeCaria , William Layton , Haiyun Zhao

Stability of inviscid shear shallow water flows with free surface is studied in the framework of the Benney equations. This is done by investigating the generalized hyperbolicity of the integrodifferential Benney system of equations. It is…

流体动力学 · 物理学 2016-10-20 Alexander Chesnokov , Gennady El , Sergey Gavrilyuk , Maxim Pavlov

We prove the existence of small steady periodic capillary-gravity water waves for general stratified flows, where we allow for stagnation points in the flow. We establish the existence of both laminar and non-laminar flow solutions for the…

偏微分方程分析 · 数学 2013-05-27 David Henry , Bogdan-Vasile Matioc

For the solutions of Navier-Stokes-Boussinesq equations in a three-dimensional thin tube with front like initial data, we derive some uniform estimates on the burning rate and the flow velocity, which can be interpreted as stability results…

偏微分方程分析 · 数学 2012-08-24 Mohammadreza Raoofi

For a class of external forces, we prove the existence and uniqueness of smooth transonic flows to the one dimensional steady Euler system with an external force, which is subsonic at the inlet and flows out at supersonic speed after…

偏微分方程分析 · 数学 2024-03-26 Shangkun Weng , Yan Zhou

Spatially localized states play an important role in transition to turbulence in shear flows (Kawahara, Uhlmann & van Veen, Annu. Rev. Fluid Mech. 44, 203 (2012)). Despite the fact that some of them are attractors on the separatrix between…

流体动力学 · 物理学 2016-04-18 Rishabh Gvalani , Cédric Beaume

This paper examines the temporal evolution of a two-stage stochastic model for spherical random fields. The model uses a time-fractional stochastic hyperbolic diffusion equation, which describes the evolution of spherical random fields on…

谱理论 · 数学 2024-12-10 Tareq Alodat , Quoc T. Le Gia

This paper investigates steady state solutions of a vasculogenesis model governed by coupled partial differential equations in a bounded two dimensional domain. Explicit steady state solutions are analytically constructed, and their…

偏微分方程分析 · 数学 2026-03-31 Sinchita Lahiri , Kun Zhao

We study the nonhomogeneous boundary value problem for the Navier-Stokes equations of steady motion of a viscous incompressible fluid in arbitrary bounded multiply connected plane or axially-symmetric spatial domains. We prove that this…

数学物理 · 物理学 2013-02-05 Mikhail. V. Korobkov , Konstantin Pileckas , Remigio Russo