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A class of nonlinear control-affine systems with bounded time-varying drift is considered. It is assumed that the control vector fields together with their iterated Lie brackets satisfy Hormander's condition in a neighborhood of the origin.…

Optimization and Control · Mathematics 2020-02-07 Victoria Grushkovskaya , Alexander Zuyev

The steady motion of a viscous incompressible fluid in a junction of unbounded channels with sources and sinks is modeled through the Navier-Stokes equations under inhomogeneous Dirichlet boundary conditions. In contrast to many previous…

Analysis of PDEs · Mathematics 2025-05-21 Filippo Gazzola , Mikhail V. Korobkov , Xiao Ren , Gianmarco Sperone

The aim of this work is to show the local null controllability of a fluid-solid interaction system by using a distributed control located in the fluid. The fluid is modeled by the incompressible Navier-Stokes system with Navier slip…

Analysis of PDEs · Mathematics 2021-06-01 Imene Aicha Djebour

At the molecular level fluid motions are, by first principles, described by time reversible laws. On the other hand, the coarse grained macroscopic evolution is suitably described by the Navier-Stokes equations, which are inherently…

This paper studies the boundary value problem on the steady compressible Navier-Stokes-Fourier system in a channel domain $(0,1)\times\mathbb{T}^2$ with a class of generalized slip boundary conditions that were systematically derived from…

Analysis of PDEs · Mathematics 2024-09-19 Renjun Duan , Junhao Zhang

We consider the incompressible and stationary Stokes equations on an infinite two-dimensional wedge with non-scaling invariant Navier-slip boundary conditions. We prove well-posedness and higher regularity of the Stokes problem in a certain…

Analysis of PDEs · Mathematics 2024-07-23 Marco Bravin , Manuel V. Gnann , Hans Knüpfer , Nader Masmoudi , Floris B. Roodenburg , Jonas Sauer

We investigate the large-time behavior of solutions to an outflow problem of the full compressible Navier-Stokes equations in the half line. The non-degenerate stationary solution is shown to be asymptotically stable under large initial…

Analysis of PDEs · Mathematics 2020-09-24 Ling Wan , Tao Wang , Qingyang Zou

This paper presents a unique continuation estimate for 2-D Stokes equations with the Naiver slip boundary condition in a bounded and simply connected domain. Consequently, an observability estimate for this equation from a subset of…

Analysis of PDEs · Mathematics 2012-05-29 Yuning Liu , Can Zhang

This paper is concerned with pullback dynamics of 3D Navier-Stokes equations with variable viscosity and subject to time-dependent external forces. Our main result establishes the existence of finite-dimensional pullback attractors in a…

Dynamical Systems · Mathematics 2019-01-23 Xin-Guang Yang , Baowei Feng , Shubin Wang , To Fu Ma , Yongjin Lu

We develop mathematical methods which allow us to study asymptotic properties of solutions to the three dimensional Navier-Stokes system for incompressible fluid in the whole three dimensional space. We deal either with the Cauchy problem…

Analysis of PDEs · Mathematics 2020-12-24 Marco Cannone , Grzegorz Karch , Dominika Pilarczyk , Gang Wu

We study the barotropic compressible Navier-Stokes equations with Navier-type boundary condition in a two-dimensional simply connected bounded domain with $C^{\infty}$ boundary $\partial\Omega.$ By some new estimates on the boundary related…

Analysis of PDEs · Mathematics 2021-04-22 Yuebo Cao

In the present technical note, we establish that the setting of the primitive variables of the unsteady incompressible fluid dynamics is ill-formulated in spatially periodic domains as the specification of the boundary velocity is too broad…

Fluid Dynamics · Physics 2021-03-29 F. Lam

We present a stability analysis for two different rotational pressure correction schemes with open and traction boundary conditions. First, we provide a stability analysis for a rotational version of the grad-div stabilized scheme of [A.…

Numerical Analysis · Mathematics 2016-08-24 Sanghyun Lee , Abner J. Salgado

Local behaviors near boundary are analyzed for solutions of the Stokes and Navier-Stoke equations in the half space with localized non-smooth boundary data. We construct solutions of Stokes equations whose velocity field is not bounded near…

Analysis of PDEs · Mathematics 2024-06-07 TongKeun Chang , Kyungkeun Kang

In this paper, we study the Navier-Stokes equations of compressible, barotropic flow posed in a bounded set in $\mathbb{R}^3$ with different boundary conditions. Specifically, we prove that the local-in-time smooth solution of the…

Analysis of PDEs · Mathematics 2020-11-24 Anthony Suen

We establish the incompressible Navier--Stokes limit for the discrete velocity model of the Boltzmann equation in any dimension of the physical space, for densities which remain in a suitable small neighborhood of the global Maxwellian.…

Exactly Solvable and Integrable Systems · Physics 2007-05-23 A. Bellouquid

We investigate a fluid-structure interaction system in which the dynamics of the fluid is described by the compressible Navier-Stokes equations, while the elastic structure is modeled by a damped plate equation. The fluid evolves in a…

Analysis of PDEs · Mathematics 2026-04-20 Kuntal Bhandari , Imene Aicha Djebour , Šárka Nečasová

Recently there has been an increasing interest for a better understanding of ultra low Reynolds number flows. In this context we present a new setup which allows to efficiently solve the stationary incompressible Navier-Stokes equations in…

Fluid Dynamics · Physics 2015-05-13 Vincent Heuveline , Peter Wittwer

We study the barotropic compressible Navier-Stokes system where the shear viscosity is a positive constant and the bulk one proportional to a power of the density with the power bigger than one and a third. The system is subject to the…

Analysis of PDEs · Mathematics 2022-06-01 Xinyu Fan , Jiaxu Li , Jing Li

In this paper we deal with a robust Stackelberg strategy for the Navier--Stokes system. The scheme is based in considering a robust control problem for the "follower control" and its associated disturbance function. Afterwards, we consider…

Optimization and Control · Mathematics 2017-08-17 C. Montoya , L. de Teresa