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We study an incompressible viscous flow around an obstacle with an oscillating boundary that moves by a translational periodic motion, and we show existence of strong time-periodic solutions for small data in different configurations: If…

偏微分方程分析 · 数学 2023-03-20 Thomas Eiter , Yoshihiro Shibata

Consider the time-periodic flow of an incompressible viscous fluid past a body performing a rigid motion with non-zero translational and rotational velocity. We introduce a framework of homogeneous Sobolev spaces that renders the resolvent…

偏微分方程分析 · 数学 2021-11-02 Thomas Eiter

Time-periodic solutions to the Navier-Stokes equations that govern the flow of a viscous liquid past a three-dimensional body moving with a time-periodic velocity are investigated. The net motion of the body over a full time-period is…

偏微分方程分析 · 数学 2016-10-03 Giovanni P. Galdi , Mads Kyed

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

This paper is concerned with integral representations and asymptotic expansions of solutions to the time-periodic incompressible Navier-Stokes equations for fluid flow in the exterior of a rigid body that moves with constant velocity. Using…

偏微分方程分析 · 数学 2024-02-20 Thomas Eiter , Ana Leonor Silvestre

Consider the resolvent problem associated with the linearized viscous flow around a rotating body. Within a setting of classical Sobolev spaces, this problem is not well posed on the whole imaginary axis. Therefore, a framework of…

偏微分方程分析 · 数学 2022-05-04 Thomas Eiter

In this paper we consider the motion of a rigid body in a viscous incompressible fluid when some Navier slip conditions are prescribed on the body's boundary. The whole system "viscous incompressible fluid + rigid body" is assumed to occupy…

偏微分方程分析 · 数学 2024-12-30 Gabriela Planas , Franck Sueur

Consider a rigid body, $\mathscr B$, constrained to move by translational motion in an unbounded viscous liquid. The driving mechanism is a given distribution of time-periodic velocity field, $\bfv_*$, at the interface body-liquid, of…

偏微分方程分析 · 数学 2020-12-02 Giovanni P. Galdi

In this paper we consider the motion of a rigid body in a viscous incompressible fluid when some Navier slip conditions are prescribed on the body's boundary. The whole `viscous incompressible fluid + rigid body' system is assumed to occupy…

偏微分方程分析 · 数学 2018-10-03 Marco Bravin

Consider the time-periodic viscous incompressible fluid flow past a body with non-zero velocity at infinity. This article gives sufficient conditions such that weak solutions to this problem are smooth. Since time-periodic solutions do not…

偏微分方程分析 · 数学 2022-12-02 Thomas Eiter

We study the motion of a rigid body within a compressible, isentropic, and viscous fluid contained in a fixed bounded domain $\Omega \subset \mathbb{R}^3$. The fluid's behavior is described by the Navier-Stokes equations, while the motion…

偏微分方程分析 · 数学 2024-08-15 Šimon Axmann , Šárka Nečasová , Ana Radošević

We study the periodic motions of the coupled system $\mathscr S$, consisting of an incompressible Navier-Stokes fluid interacting with a structure formed by a rigid body subject to {\em undamped} elastic restoring forces and torque around…

偏微分方程分析 · 数学 2025-12-03 Denis Bonheure , Giovanni Paolo Galdi , Clara Patriarca

We study existence, uniqueness, regularity and asymptotic spatial behavior of a Navier-Stokes flow past a body moving by a time-periodic translational motion of period $T$, and with zero average. For example, $\mathscr B$ moves in an…

偏微分方程分析 · 数学 2020-07-15 Giovanni P. Galdi

We consider the evolution of a small rigid body in an incompressible viscous fluid filling the whole space. The motion of the fluid is modelled by the Navier-Stokes equations, whereas the motion of the rigid body is described by the…

偏微分方程分析 · 数学 2021-03-10 Jiao He , Dragos Iftimie

We show existence and uniqueness for small data of regular time-periodic solutions to the Navier-Stokes problem in the exterior of a rigid body, $\mathscr B$, that moves by time-periodic translational motion of the same period along a…

偏微分方程分析 · 数学 2020-06-08 Giovanni P. Galdi

We show existence and uniqueness of regular time-periodic solutions to the Navier-Stokes problem in the exterior of a rigid body, $\mathscr B$, that moves by arbitrary (sufficiently smooth) time-periodic translational motion of the same…

偏微分方程分析 · 数学 2020-03-18 Giovanni P. Galdi

We consider the motion of a rigid body, governed by the Navier-Stokes equations in a bounded domain. Navier's condition is prescribed on the boundary of the body. We give the global in a time solvability result of weak solution. The result…

偏微分方程分析 · 数学 2017-06-20 Nikolai V. Chemetov , Sarka Necasova

This paper is devoted to the existence of a weak solution to a system describing a self-propelled motion of a rigid body in a viscous fluid in the whole $\mathbb{R}^3$. The fluid is modelled by the incompressible nonhomogeneous…

偏微分方程分析 · 数学 2019-10-14 Sarka Necasova , Mythily Ramaswamy , Arnab Roy , Anja Schlomerkemper

The motion of an elastic solid inside of an incompressible viscous fluid is ubiquitous in nature. Mathematically, such motion is described by a PDE system that couples the parabolic and hyperbolic phases, the latter inducing a loss of…

偏微分方程分析 · 数学 2009-11-10 Daniel Coutand , Steve Shkoller

We consider the fluid-structure interaction problem of a viscous incompressible fluid contained in an elastic solid whose motion is not prescribed. The equations governing the motion of the solid are given by the Navier equations of linear…

偏微分方程分析 · 数学 2025-07-01 Giusy Mazzone
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