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Barotropic fluid flows with the same circulation structure as steady flows generically have comoving physical surfaces on which the vortex lines lie. These become Bernoullian surfaces when the flow is steady. When these surfaces are nested…

流体动力学 · 物理学 2023-09-29 Asher Yahalom

Orientational dynamics in a liquid crystalline system near the isotropic-nematic (I-N) phase transition is studied using Molecular Dynamics simulations of the well-known Lebwohl-Lasher (LL) model. As the I-N transition temperature is…

软凝聚态物质 · 物理学 2009-11-11 Suman Chakrabarty , Dwaipayan Chakrabarti , Biman Bagchi

A weakly conducting liquid droplet immersed in another leaky dielectric liquid can exhibit rich dynamical behaviors under the effect of an applied electric field. Depending on material properties and field strength, the nonlinear coupling…

流体动力学 · 物理学 2023-06-28 Mohammadhossein Firouznia , Spencer H. Bryngelson , David Saintillan

This work presents a theoretical and numerical study of electrokinetic flow and the zeta potential for the case of slit channels with nanoscale roughness of dimensions comparable to the Debye length, by employing molecular dynamics…

流体动力学 · 物理学 2020-08-03 Sijia Huang , Amir M. Rahmani , Troy Singletary , Carlos E. Colosqui

Shear flow of dense, non-Brownian suspensions is simulated using the discrete element method, taking particle contact and hydrodynamic lubrication into account. The resulting flow regimes are mapped in the parametric space of solid volume…

软凝聚态物质 · 物理学 2015-01-06 Christopher Ness , Jin Sun

In this paper, a Freedericksz-like positional transition is found for a spherical micro-droplet suspended in a nematic liquid crystal cell in the presence of an external electric field. Based on the numerical calculation of elastic energy…

软凝聚态物质 · 物理学 2019-10-30 Ke Xiao , Xi Chen , Chen-Xu Wu

In this article, we aim to study the stability and dynamic transition of an electrically conducting fluid in the presence of an external uniform horizontal magnetic field and rotation based on a Boussinesq approximation model. By analyzing…

动力系统 · 数学 2022-05-25 Liang Li , Yanlong Fan , Daozhi Han , Quan Wang

An electrohydrodynamic numerical model is used to explore the electrospray emission behavior of both moderate and high electrical conductivity liquids under electrospray conditions. The Volume-of-Fluid method, incorporating a…

流体动力学 · 物理学 2022-11-30 Henry Huh , Richard E. Wirz

Hydrodynamic electron flow is experimentally observed in the differential resistance of electrostatically defined wires in the two-dimensional electron gas in (Al,Ga)As heterostructures. In these experiments current heating is used to…

凝聚态物理 · 物理学 2009-10-22 M. J. M. de Jong , L. W. Molenkamp

A set of equations according to which the conducting medium consists of two fluids - laminar and vortex, has been obtained in the present paper by transforming MHD equations. In a similar way, an electronic fluid is assumed to consist of a…

chao-dyn · 物理学 2009-10-22 N. B. Volkov , A. M. Iskoldsky

In nonlinear systems, small perturbations are conventionally attributed to negligible nonlinearity, justifying linear approximations. Here, we uncover a notable exception to this paradigm in an electrokinetic (EK) flow. Using a novel dual…

流体动力学 · 物理学 2026-04-16 Jin'an Pang , Guangyin Jing , Xiaoqiang Feng , Kaige Wang , Wei Zhao

The aim of this paper is to calculate the time dependence of the mean position (and orientation) of a fluid particle when a fluid system at thermodynamic equilibrium is submitted to a mechanical action. The starting point of this novel…

软凝聚态物质 · 物理学 2022-04-25 Frederic Aitken , Ferdinand Volino

Fluids with shear-rate-dependent viscosity form a special class of non-Newtonian fluids that play a crucial role in continuum dynamics. We consider a compressible barotropic flow of such fluids, governed by a generalized Navier-Stokes…

偏微分方程分析 · 数学 2025-04-29 Pavel Ludvík , Václav Mácha

Of concern in the paper is a generalized theoretical study of the non-Newtonian characteristics of peristaltic flow of blood through micro-vessels, e.g. arterioles. The vessel is considered to be of variable cross-section and blood to be a…

流体动力学 · 物理学 2013-08-19 S. Maiti , J. C. Misra

Many recent experiments addressed manifestations of electronic crystals, particularly the charge density waves, in nano-junctions, under electric field effect, at high magnetic fields, together with real space visualizations by STM and…

强关联电子 · 物理学 2018-07-23 Serguei Brazovskii , Natasha Kirova

In this study, we propose a graph neural network (GNN) model for efficiently predicting the flow behavior of non-Newtonian fluids with free surface dynamics. The numerical analysis of non-Newtonian fluids presents significant challenges, as…

流体动力学 · 物理学 2025-09-30 Hyo-Jin Kim , Jaekwang Kim , Hyung-Jun Park

The present work is related to the study of the nitrogen gas flow through diverging micro and nano-channels. The direct simulation Monte-Carlo (DSMC) method has been used to study the flow. The Simplified Bernoulli Trials (SBT) collision…

流体动力学 · 物理学 2018-01-29 Amin Ebrahimi , Ehsan Roohi

The dynamics of a spherical elastic capsule, containing a Newtonian fluid bounded by an elastic membrane and immersed in another Newtonian fluid, in a uniform DC electric field is investigated. Discontinuity of electrical properties such as…

软凝聚态物质 · 物理学 2018-06-06 Sudip Das , Rochish M. Thaokar

In this paper we present an experimental study of the dynamic responses of a Newtonian fluid and a Maxwellian fluid under an oscillating pressure gradient. We use laser Doppler anemometry in order to determine the velocity of each fluid…

流体动力学 · 物理学 2009-11-10 J. R. Castrejon-Pita , J. A. del Rio , A. A. Castrejon-Pita , G. Huelsz

Hydrodynamic-like electron flows are typically modeled using the Stokes-Ohm equation or a kinetic description that is based on a dual-relaxation time approximation. Such models assume a short intrinsic mean free path $\ell_e$ due to…

介观与纳米尺度物理 · 物理学 2025-03-19 Nitay Ben-Shachar , Johannes Hofmann