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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

The equations governing the flow of a viscous incompressible fluid around a rigid body that performs a prescribed time-periodic motion with constant axes of translation and rotation are investigated. Under the assumption that the period and…

偏微分方程分析 · 数学 2019-12-12 Thomas Eiter , Mads Kyed

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

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

We consider a time-periodic incompressible three-dimensional Navier-Stokes flow past a translating rigid body. In the first part of the paper, we establish the existence and uniqueness of strong solutions in the exterior domain $\Omega…

偏微分方程分析 · 数学 2025-08-01 Thomas Eiter , Ana Leonor Silvestre

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 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

This article considers non-stationary incompressible linear fluid equations in a moving domain. We demonstrate the existence and uniqueness of an appropriate weak formulation of the problem by making use of the theory of time-dependent…

偏微分方程分析 · 数学 2023-10-26 Ana Djurdjevac , Carsten Gräser , Philip J. Herbert

We investigate the equations of anisotropic incompressible viscous fluids in $\R^3$, rotating around an inhomogeneous vector $B(t, x_1, x_2)$. We prove the global existence of strong solutions in suitable anisotropic Sobolev spaces for…

偏微分方程分析 · 数学 2009-11-13 Mohamed Majdoub , Marius Paicu

We present pointwise space-time decay estimates for the velocity part of solutions to the time-dependent Oseen system in 3D, with Dirichlet boundary conditions and vanishing velocity at infinity. In addition, similar estimates are derived…

偏微分方程分析 · 数学 2017-09-06 Paul Deuring

Existence, uniqueness, and regularity of time-periodic solutions to the Navier-Stokes equations in the three-dimensional whole-space are investigated. We consider the Navier-Stokes equations with a non-zero drift term corresponding to the…

偏微分方程分析 · 数学 2015-06-17 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

We are concerned with a time periodic supersonic flow through a bounded interval. This motion is described by the compressible Euler equation with a time periodic outer force. Our goal in this paper is to prove the existence of a time…

偏微分方程分析 · 数学 2019-08-09 Naoki Tsuge

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 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

In this paper, we study one-dimensional nonhomogeneous isentropic compressible Euler equations with time-periodic boundary conditions. With the aid of the energy methods, we prove the existence and uniqueness of the time-periodic supersonic…

偏微分方程分析 · 数学 2022-07-20 Huimin Yu , Xiaomin Zhang , Jiawei Sun

The issue of the inviscid limit for the incompressible Navier-Stokes equations when a no-slip condition is prescribed on the boundary is a famous open problem. A result by Tosio Kato says that convergence to the Euler equations holds true…

偏微分方程分析 · 数学 2015-05-30 Franck Sueur

Under the action of a time-periodic external forces we prove the existence of at least one time-periodic weak solution for the interaction between a three-dimensional incompressible fluid, governed by the Navier- Stokes equation and a two…

偏微分方程分析 · 数学 2022-04-08 Claudiu Mîndrilă , Sebastian Schwarzacher

We consider a mass-spring system immersed in an incompressible fluid flow governed by the Navier-Stokes equations subject to a prescribed time-periodic flow rate (and possibly external time-periodic body forces on the fluid and the mass).…

偏微分方程分析 · 数学 2023-12-15 Giusy Mazzone , Mahdi Mohebbi

Consider the Navier-Stokes flow past a rotating obstacle with a general time-dependent angular velocity and a time-dependent outflow condition at infinity -- sometimes called an Oseen condition. By a suitable change of coordinates the…

偏微分方程分析 · 数学 2010-06-21 Tobias Hansel , Abdelaziz Rhandi
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