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In this paper, we are interested in the collective friction of a cloud of particles on the viscous incompressible fluid in which they are moving. The particles velocities are assumed to be given and the fluid is assumed to be driven by the…

偏微分方程分析 · 数学 2024-09-12 Matthieu Hillairet , Ayman Moussa , Franck Sueur

We consider the motion of a large number of heavy particles in a Newtonian fluid occupying a bounded spatial domain. When we say "heavy", we mean a particle with a mass density that approaches infinity at an appropriate rate as its radius…

偏微分方程分析 · 数学 2024-07-12 Marco Bravin , Eduard Feireisl , Arnab Roy , Arghir Zarnescu

From the steady Stokes and Navier-Stokes models, a penalization method has been considered by several authors for approximating those fluid equations around obstacles. In this work, we present a justification for using fictitious domains to…

偏微分方程分析 · 数学 2021-08-30 Jorge Aguayo , Hugo Carrillo

Convergence of particle systems to the Vlasov-Navier-Stokes equations is a difficult topic with only fragmentary results. Under a suitable modification of the classical Stokes drag force interaction, here a partial result in this direction…

概率论 · 数学 2018-07-31 Franco Flandoli , Marta Leocata , Cristiano Ricci

Fluid flows are typically studied by solving the Navier--Stokes equation. One of the fundamental assumptions of this equation is Stokes' hypothesis. This hypothesis assumes bulk viscosity, to be identically zero. The Stokes' hypothesis is a…

流体动力学 · 物理学 2023-03-16 Bhanuday Sharma , Rakesh Kumar

We consider the time-dependent compressible Navier-Stokes equations in the low Mach number regime inside a family of domains $(\Omega_\varepsilon)_{\varepsilon > 0}$ in $\mathbb{R}^3$. Assuming that $\lim_{\varepsilon \to 0}…

偏微分方程分析 · 数学 2025-05-19 Peter Bella , Friederike Lemming , Roberta Marziani , Florian Oschmann

In this paper we investigate the stress concentration problem that occurs when two convex rigid particles are closely immersed in a fluid flow. The governing equations for the fluid flow are the stationary incompressible Navier-Stokes…

偏微分方程分析 · 数学 2024-11-26 Haigang Li , Peihao Zhang

A few basic, intuitive, properties of the Navier-Stokes system of equations for incompressible fluid flows are discussed in this paper. We present a rephrased interpretation of the Navier-Stokes equation in a space having an arbitrary…

综合数学 · 数学 2023-06-28 R. K. Michael Thambynayagam

We analyze the steady motion of a viscous incompressible fluid in a three-dimensional channel containing an obstacle through the Navier-Stokes equations with mixed boundary conditions: the inflow is given by a fairly general datum and the…

偏微分方程分析 · 数学 2020-08-21 Gianmarco Sperone

We investigate the steady self-propelled motion of a rigid body immersed in a three-dimensional incompressible viscous fluid governed by the Navier-Stokes equations. The analysis is performed in a body-fixed reference frame, so that the…

偏微分方程分析 · 数学 2026-01-01 Sarka Necasova , Arnab Roy , Ana Leonor Silvestre

We consider the motion of compressible Navier-Stokes fluids with the hard sphere pressure law around a rigid obstacle when the velocity and the density at infinity are non zero. This kind of pressure model is largely employed in various…

偏微分方程分析 · 数学 2022-08-31 Sarka Necasova , Antonin Novotny , Arnab Roy

We consider the motion of an incompressible viscous fluid on a compact Riemannian manifold $\sM$ with boundary. The motion on $\sM$ is modeled by the incompressible Navier-Stokes equations, and the fluid is subject to pure or partial slip…

偏微分方程分析 · 数学 2024-10-25 Yuanzhen Shao , Gieri Simonett , Mathias Wilke

We study the initial-boundary value problem of the Navier-Stokes equations for incompressible fluids in a general domain in $\R^n$ with compact and smooth boundary, subject to the kinematic and vorticity boundary conditions on the non-flat…

偏微分方程分析 · 数学 2009-01-05 Gui-Qiang Chen , Dan Osborne , Zhongmin Qian

In the theory of the Navier-Stokes equations, the viscous fluid in incompressible flow is modelled as a homogeneous and dense assemblage of constituent "fluid particles" with viscous stress proportional to rate of strain. The crucial…

流体动力学 · 物理学 2022-08-23 Wennan Zou

The experiment shows that small liquid droplets under the action of gravity and the Archimedes force move in the external viscous liquid practically according to the Stokes drag force equation, and not in accordance with the…

流体动力学 · 物理学 2025-02-11 Peter Lebedev-Stepanov

An alternative form of the general solution of the linearized stationary Navier-Stokes equations for an incompressible fluid in spherical coordinates is obtained by the vector potential method. A previously published solution to this…

流体动力学 · 物理学 2024-12-10 Peter Lebedev-Stepanov

We study the nonhomogeneous boundary value problem for Navier--Stokes equations of steady motion of a viscous incompressible fluid in a two--dimensional bounded multiply connected domain $\Omega=\Omega_1\setminus\bar{\Omega}_2,…

数学物理 · 物理学 2011-10-31 Mikhail V. Korobkov , Konstantin Pileckas , Remigio Russo

Convergence of a system of particles, interacting with a fluid, to Navier-Stokes-Vlasov-Fokker-Planck system is studied. The interaction between particles and fluid is described by Stokes drag force. The empirical measure of particles is…

概率论 · 数学 2018-11-21 Franco Flandoli , Marta Leocata , Cristiano Ricci

We consider ionic electrodiffusion in fluids, described by the Nernst-Planck-Navier-Stokes system in bounded domains, in two dimensions, with Dirichlet boundary conditions for the Navier-Stokes and Poisson equations, and blocking (vanishing…

偏微分方程分析 · 数学 2018-12-26 Peter Constantin , Mihaela Ignatova

In topology optimization of fluid-dependent problems, there is a need to interpolate within the design domain between fluid and solid in a continuous fashion. In density-based methods, the concept of inverse permeability in the form of a…

数值分析 · 数学 2023-03-01 Mohamed Abdelhamid , Aleksander Czekanski
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