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We present an analitical study of the dynamical process of the approach to steady state for a driven diffusive system represented by the microemulsion phase of a ternary mixture. The external applied field is given by a plane Couette shear…

统计力学 · 物理学 2009-11-07 D. Suppa

Large-scale instabilities occurring in the presence of small-scale turbulent fluctuations are frequently observed in geophysical or astrophysical contexts but are difficult to reproduce in the laboratory. Using extensive numerical…

流体动力学 · 物理学 2014-05-06 Geert Brethouwer , Philipp Schlatter , Yohann Duguet , Dan S. Henningson , Arne V. Johansson

We present an experimental and numerical study of immiscible two-phase flow in 3-dimensional (3D) porous media to find the relationship between the volumetric flow rate ($Q$) and the total pressure difference ($\Delta P$) in the steady…

Quantum charge pumping phenomenon connects band topology through the dynamics of a one-dimensional quantum system. In terms of a microscopic model, the Su-Schrieffer-Heeger/Rice-Mele quantum pump continues to serve as a fruitful starting…

量子气体 · 物理学 2017-07-26 Ning Sun , Lih-King Lim

Continuous diffusion models are commonly acknowledged to display a deterministic probability flow, whereas discrete diffusion models do not. In this paper, we aim to establish the fundamental theory for the probability flow of discrete…

机器学习 · 计算机科学 2023-11-08 Pengze Zhang , Hubery Yin , Chen Li , Xiaohua Xie

We present a hybrid simulation method which allows one to study the dynamical evolution of self-assembling (co)polymer solutions in the presence of hydrodynamic interactions. The method combines an established dynamic density functional…

软凝聚态物质 · 物理学 2018-04-10 Johannes Heuser , G. J. Agur Sevink , Friederike Schmid

Shale gas recovery has seen a major boom in recent years due to the increasing global energy demands; but the extraction technologies are very expensive. It is therefore important to develop realistic transport modelling and simulation…

流体动力学 · 物理学 2016-10-18 Iftikhar Ali , Nadeem A. Malik

We present a Lattice-Boltzmann method for simulating self-propelling (active) colloidal particles in two-dimensions. Active particles with symmetric and asymmetric force distribution on its surface are considered. The velocity field…

软凝聚态物质 · 物理学 2009-11-11 Sanoop Ramachandran , P. B. Sunil Kumar , I. Pagonabarraga

A biconcave particle suspended in a Poiseuille flow is investigated by the multiple-relaxation-time lattice Boltzmann method with the Galilean-invariant momentum exchange method. The lateral migration and equilibrium of the particle are…

计算物理 · 物理学 2013-03-06 Wen Bing-Hai , Chen Yan-Yan , Zhang Ren-Liang , Zhang Chao-Ying , Fang Hai-Ping

Transport of electrolytic solutions under influence of electric fields occurs in phenomena ranging from biology to geophysics. Here, we present a continuum model for single-phase electrohydrodynamic flow, which can be derived from…

流体动力学 · 物理学 2020-06-30 Gaute Linga , Asger Bolet , Joachim Mathiesen

Bubble-driven inertial pumps are a novel method of moving liquids through microchannels. We combine high-speed imaging, computational fluid dynamics (CFD) simulations and an effective one-dimensional model to study the fundamentals of…

流体动力学 · 物理学 2016-05-17 A. N. Govyadinov , P. E. Kornilovitch , D. P. Markel , E. D. Torniainen

A molecular dynamics (MD) simulation of planar Couette flow is presented for the minimal channel in which turbulence structures can be sustained. Evolution over a single breakdown and regeneration cycle is compared to computational fluid…

流体动力学 · 物理学 2015-12-04 E. R. Smith

This paper introduces the fundamental continuum theory governing momentum transport in isotropic nanofluidic flows. The theory is an extension to the classical Navier-Stokes equation, which includes coupling between translational and…

软凝聚态物质 · 物理学 2017-01-04 J. S. Hansen , Jeppe C. Dyre , Peter J. Daivis , B. D. Todd , Henrik Bruus

We present the first simultaneous mapping of two-dimensional, time-dependent velocity and pressure fields in a plane Couette flow pervaded by a transverse magnetic field. While electromagnetic forces are strongest in fluids of high electric…

流体动力学 · 物理学 2020-11-20 Brahim Moudjed , Alban Pothérat , Martin Holdsworth

Plane Couette flow presents a regular oblique turbulent-laminar pattern over a wide range of Reynolds numbers R between the globally stable base flow profile at low R<R_g and a uniformly turbulent regime at sufficiently large R>R_t. The…

流体动力学 · 物理学 2016-03-22 Paul Manneville

We discuss a unified flow theory which in a single system of hyperbolic partial differential equations (PDEs) can describe the two main branches of continuum mechanics, fluid dynamics, and solid dynamics. The fundamental difference from the…

流体动力学 · 物理学 2018-11-19 Ilya Peshkov , Evgeniy Romenski , Michael Dumbser

Recent experiments have shown that it is possible to study a fundamental astrophysical process such as dynamo action in controlled laboratory conditions using simple MHD flows. In this paper we explore the possibility that Taylor-Couette…

天体物理学 · 物理学 2009-11-07 Ashley P. Willis , Carlo F. Barenghi

This work presents a unified viscoelastic-viscoplastic continuum framework for modeling rate-dependent granular flows across regimes. The formulation incorporates two distinct rate-dependent mechanisms, namely micro-inertia and viscoelastic…

软凝聚态物质 · 物理学 2026-04-28 Bodhinanda Chandra , Sachith Dunatunga , Ken Kamrin

We propose a framework to understand input-output amplification properties of non- linear partial differential equation (PDE) models of wall-bounded shear flows, which are spatially invariant in one coordinate (e.g., streamwise-constant…

流体动力学 · 物理学 2019-07-24 Mohamadreza Ahmadi , Giorgio Valmorbida , Dennice Gayme , Antonis Papachristodoulou

We present a continuum scale particle transport model for red blood cells following collision arguments in a diffusive flux formulation. The model is implemented in FOAM, in a framework for haemodynamics simulations. Modern mechanistic…

流体动力学 · 物理学 2021-09-02 Torsten Schenkel , Ian Halliday