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The large deformations and break up of circular 2D liquid patches in a high Reynolds number (Re=1000) gas flow are investigated numerically. The 2D, plane flow Navier--Stokes equations are directly solved with explicit tracking of the…

chao-dyn · 物理学 2009-10-28 S. Zaleski , Jie Li , S. Succi

The evolution of two isothermal, incompressible, immiscible fluids in a bounded domain is governed by Cahn-Hilliard-Navier-Stokes equations (CHNS System). In this work, we study the well-posedness results for the CHNS system with…

偏微分方程分析 · 数学 2025-10-28 Manika Bag , Tania Biswas , Sheetal Dharmatti

We investigate the existence of weak solutions to a certain system of partial differential equations, modelling the behaviour of a compressible non-Newtonian fluid for small Reynolds number. We construct the weak solutions despite the lack…

偏微分方程分析 · 数学 2023-05-24 Milan Pokorný , Maja Szlenk

Exact unstable solutions of the Navier-Stokes equations are thought to underpin the dynamics of turbulence, but are usually computed in minimal computational domains. Here, we extend this dynamical systems approach to spatially extended…

流体动力学 · 物理学 2026-01-30 Dmitriy Zhigunov , Jacob Page

Viscous flows through pipes and channels are steady and ordered until, with increasing velocity, the laminar motion catastrophically breaks down and gives way to turbulence. How this apparently discontinuous change from low- to…

流体动力学 · 物理学 2023-07-24 Chaitanya S. Paranjape , Gökhan Yalnız , Yohann Duguet , Nazmi Burak Budanur , Björn Hof

Numerical solvers of the incompressible Navier-Stokes equations have reproduced turbulence phenomena such as the law of the wall, the dependence of turbulence intensities on the Reynolds number, and experimentally observed properties of…

流体动力学 · 物理学 2015-06-05 Divakar Viswanath , Ian Tobasco

The aim of this paper is to show time-decay estimates of solutions to linearized two-phase Navier-Stokes equations with surface tension and gravity. The original two-phase Navier-Stokes equations describe the two-phase incompressible…

偏微分方程分析 · 数学 2021-03-02 Hirokazu Saito

A proof of existence, uniqueness and smoothness of the Navier-Stokes equations is an actual problem, which solution is important for different branches of science. The subject of this study is obtaining the smooth and unique solutions of…

流体动力学 · 物理学 2016-08-30 Alexey V. Zhirkin

Over the centuries mathematicians have been challenged by the partial differential equations (PDEs) that describe the motion of fluids in many physical contexts. Important and beautiful results were obtained in the past one hundred years,…

偏微分方程分析 · 数学 2023-07-05 Alexey Cheskidov , Mimi Dai , Susan Friedlander

We present an extension of the Piecewise Parabolic Method to special relativistic fluid dynamics in multidimensions. The scheme is conservative, dimensionally unsplit, and suitable for a general equation of state. Temporal evolution is…

天体物理学 · 物理学 2009-11-11 A. Mignone , T. Plewa , G. Bodo

Non-linear effects of the Navier-Stokes equations disappear under the Stokes regime of Newtonian fluid flows disallowing the fluid flow rectification. Here we show mathematically and experimentally that passive flow rectification of…

流体动力学 · 物理学 2018-11-21 Aryan Mehboudi , Junghoon Yeom

The Landau-Lifshitz Navier-Stokes (LLNS) equations incorporate thermal fluctuations into macroscopic hydrodynamics by using stochastic fluxes. This paper examines explicit Eulerian discretizations of the full LLNS equations. Several CFD…

数值分析 · 数学 2009-11-11 John B. Bell , Alejandro L. Garcia , Sarah A. Williams

There are few approaches to the solution of a system of nonlinear differential equations in partial derivatives, for example $\cite{NK87} - \cite{EK98}$. In our paper we propose an approach that was used to solve the Navier-Stokes equations…

偏微分方程分析 · 数学 2012-10-24 A. Tsionskiy , M. Tsionskiy

Various methods for numerically solving Stokes Flow, where a small Reynolds number is assumed to be zero, are investigated. If pressure, horizontal velocity, and vertical velocity can be decoupled into three different equations, the…

计算工程、金融与科学 · 计算机科学 2017-12-21 Ryan Hermle

When numerically computing high Reynolds number cavity flow, it is known that by formulating the Navier-Stokes equations using the stream function and vorticity as unknown functions, it is possible to reproduce finer flow structures.…

数值分析 · 数学 2024-08-20 Yusuke Imoto

In this paper, we study the Cauchy problem to the 3D fractional compressible isentropic generalized Navier-Stokes equations for viscous compressible fluid with one Levy diffusion process. We obtain the existence and uniqueness of global…

偏微分方程分析 · 数学 2024-07-03 Mengqian Liu , Lei Niu , Zhigang Wu

The paper extends a stabilized fictitious domain finite element method initially developed for the Stokes problem to the incompressible Navier-Stokes equations coupled with a moving solid. This method presents the advantage to predict an…

数值分析 · 数学 2017-07-12 Sébastien Court , Michel Fournié

We consider a coupled system consisting of a kinetic equation coupled to a macroscopic Stokes (or Navier-Stokes) equation and describing the motion of a suspension of rigid rods in gravity. A reciprocal coupling leads to the formation of…

流体动力学 · 物理学 2015-10-13 Christiane Helzel , Athanasios E. Tzavaras

This paper presents a reduced-order model for the Reynolds equation for deformable structure and large displacements. It is based on the model established in [11] which is piece-wise linearized using two different methods. The advantages…

其他计算机科学 · 计算机科学 2009-11-13 A. Missoffe , J. Juillard , Denis Aubry

A Cahn-Hilliard-Navier-Stokes system for two-phase flow on an evolving surface with non-matched densities is derived using methods from rational thermodynamics. For a Cahn-Hilliard energy with a singular (logarithmic) potential short time…

偏微分方程分析 · 数学 2025-11-18 Helmut Abels , Harald Garcke , Andrea Poiatti