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This paper concerns the dynamics of a layer of incompressible viscous fluid lying above a rigid plane and with an upper boundary given by a free surface. The fluid is subject to a constant external force with a horizontal component, which…

偏微分方程分析 · 数学 2018-03-14 Ian Tice

Surface tension is a key parameter for understanding nucleation from the very initial stage of phase transformation. Although surface tension has been predicted to vary with the curvature of the liquid-vapor interface, particularly at the…

介观与纳米尺度物理 · 物理学 2020-10-13 Dohyun Kim , Jongwoo Kim , Jonggeun Hwang , Dongha Shin , Sangmin An , Wonho Jhe

We present a new asymptotic strategy for general micro-macro models which analyze complex viscoelastic fluids governed by coupled multiscale dynamics. In such models, the elastic stress appearing in the macroscopic continuum equation is…

数学物理 · 物理学 2025-12-22 Xuenan Li , Chun Liu , Di Qi

A localised overpressure translating at a uniform speed greater than a critical value acts at the interface between two deep fluid layers with different densities. We analyse the resulting wave patterns using an initial-value problem…

流体动力学 · 物理学 2026-05-13 Vinod Kumar Kadari , Nikhil Yewale , Palas Kumar Farsoiya , Y. S. Mayya , Ratul Dasgupta

Consider a viscous fluid of finite depth below the air. In the absence of the surface tension effect at the air-fluid interface, the long time behavior of a free surface with small amplitude has been an intriguing question since the work of…

偏微分方程分析 · 数学 2011-02-24 Yan Guo , Ian Tice

Within OpenFOAM, we develop a pressure-based solver for the Euler equations written in conservative form using density, momentum, and total energy as variables. Under simplifying assumptions, these equations are used to describe…

流体动力学 · 物理学 2023-02-10 Michele Girfoglio , Annalisa Quaini , Gianluigi Rozza

Based on the characteristics of the multi-scale and similarity at different scales in turbulent flow, we propose a scale decomposition for solving the turbulence problem of incompressible Newtonian fluid. The solution domain is decomposed…

流体动力学 · 物理学 2023-02-21 Shanwen Tan

In the study of local regularity of weak solutions to systems related to incompressible viscous fluids local energy estimates serve as important ingredients. However, this requires certain informations on the pressure. This fact has been…

偏微分方程分析 · 数学 2016-11-07 Joerg Wolf

We present a new diffuse interface model for the dynamics of inextensible vesicles in a viscous fluid. A new feature of this work is the implementation of the local inextensibility condition in the diffuse interface context. Local…

数学物理 · 物理学 2015-06-18 Sebastian Aland , Sabine Egerer , John Lowengrub , Axel Voigt

We study a porous medium-type equation whose pressure is given by a nonlocal L\'{e}vy operator associated to a symmetric jump L\'{e}vy kernel. The class of nonlocal operators under consideration appears as a generalization of the classical…

偏微分方程分析 · 数学 2025-03-06 Guy Foghem , David Padilla-Garza , Markus Schmidtchen

We present an analysis of the Rayleigh-Plesset equation for a three dimensional vacuous bubble in water. In the simplest case when the effects of surface tension are neglected, the known parametric solutions for the radius and time…

流体动力学 · 物理学 2017-11-10 S. C. Mancas , H. C. Rosu

Motivated by a long-standing debate concerning the nature and interrelations of surface-tension variables in fluid membranes, we reformulate the thermodynamics of a membrane vesicle as a generic two-dimensional finite system enclosing a…

软凝聚态物质 · 物理学 2012-02-03 Haim Diamant

It is shown that when the nanobubble contact line is pinned to a penetrating tip the interface behaves like a Hookean spring with spring constant proportional to the nanobubble surface tension. Atomic force microscope (AFM) data for several…

软凝聚态物质 · 物理学 2015-05-12 Phil Attard

We study the Einstein gravity equations projected on a timelike surface, which represents the time evolution of what we call a gravitational screen. We show that such a screen behaves like a viscous bubble with a surface tension and an…

广义相对论与量子宇宙学 · 物理学 2015-10-07 Laurent Freidel , Yuki Yokokura

We first show the equivalence of two classes of generalized suitable weak solutions to the 3D incompressible Navier-Stokes equations allowing distributional pressure, the class of dissipative weak solutions and local suitable weak…

偏微分方程分析 · 数学 2021-09-03 Hyunju Kwon

We study the free energy landscapes of a pair of submicron spherical particles floating at the surface of a sessile droplet. The particles are subjected to radial external forces resulting in a deformation of the droplet shape relative to…

软凝聚态物质 · 物理学 2015-03-17 J. Guzowski , M. Tasinkevych , S. Dietrich

A proven methodology to solve multiphase flows is based on the one-fluid formulation of the governing equations, which treats the phase transition across the interface as a single fluid with varying properties and adds additional source…

流体动力学 · 物理学 2025-01-08 Jordi Poblador-Ibanez , Nicolas Valle , Bendiks Jan Boersma

A systematically designed study has been conducted to understand and clearly demarcate the degree of contribution by the constituting elements to the surface tension of nanocolloids. The effects of elements such as surfactants, particles…

软凝聚态物质 · 物理学 2016-10-20 A R Harikrishnan , Purbarun Dhar , PK Agnihotri , Sateesh Gedupudi , Sarit K Das

In this paper, we present a novel approach to model the fluid/solid interaction forces in a direct solver of the Navier-Stokes equations based on the volume of fluid interface tracking method. The key ingredient of the model is the explicit…

流体动力学 · 物理学 2015-06-16 Kyle Mahady , Shahriar Afkhami , Lou Kondic

We consider the free boundary problem for two layers of immiscible, viscous, incompressible fluid in a uniform gravitational field, lying above a rigid bottom in a three-dimensional horizontally periodic setting. The effect of surface…

偏微分方程分析 · 数学 2015-09-29 Yanjin Wang , Ian Tice
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