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A coarse grained description of a two phase fluid is used to study the steady state configuration of the interface separating the coexisting phases, and the motion of the contact line at which the interface intersects a solid boundary. The…

统计力学 · 物理学 2009-10-31 Hsuan-Yi Chen , David Jasnow , Jorge Vinals

We present a large-scale molecular dynamics study of nematic-paranematic interfaces under shear. We use a model of soft repulsive ellipsoidal particles with well-known equilibrium properties, and consider interfaces which are oriented…

软凝聚态物质 · 物理学 2013-03-19 Guido Germano , Friederike Schmid

We report on a non trivial dynamics of the interface between shear bands following a start-up of flow in a semi-dilute wormlike micellar system investigated using a combination of mechanical and optical measurements. During the building of…

软凝聚态物质 · 物理学 2008-04-03 S. Lerouge , M. A. Fardin , M. Argentina , G. Gregoire , O. Cardoso

Nonequilibrium molecular dynamics simulations are used to study the shear thinning behavior of immiscible symmetric polymer blends. The phase separated polymers are subjected to a simple shear flow imposed by moving a wall parallel to the…

软凝聚态物质 · 物理学 2009-11-07 Sandra Barsky , Mark O. Robbins

We examine the linear stability of fluid interfaces subjected to a shear flow. Our main object is to generalize previous work to arbitrary Atwood number, and to allow for surface tension and weak compressibility. The motivation derives from…

天体物理学 · 物理学 2007-05-23 A. Alexakis , Y. Young , R. Rosner

We use a phase-separated driven two-dimensional Ising lattice gas to study fluid interfaces exposed to shear flow parallel to the interface. The interface is stabilized by two parallel walls with opposing surface fields and a driving field…

The transport of slightly deformable chiral objects in a uniform shear flow is investigated. Depending on the equilibrium configuration one finds up to four different asymptotic states that can be distinguished by a lateral drift velocity…

软凝聚态物质 · 物理学 2012-07-06 Peter Talkner , Gert-Ludwig Ingold , Peter Hanggi

We study numerically the nonlinear dynamics of a shear banding interface in two dimensional planar shear flow, within the non-local Johnson Segalman model. Consistent with a recent linear stability analysis, we find that an initially flat…

软凝聚态物质 · 物理学 2009-11-11 Suzanne M. Fielding , Peter D. Olmsted

The steady state properties of an interface in a stationary Couette flow are addressed within the framework of fluctuating hydrodynamics. Our study reveals that thermal fluctuations are driven out of equilibrium by an effective shear rate…

软凝聚态物质 · 物理学 2010-04-26 Marine Thiébaud , Thomas Bickel

The linear instability of a surfactant-laden two-layer falling film over an inclined slippery wall is analyzed under an influence of external shear which is imposed on the top surface of the flow. The free surface of the flow as well as the…

流体动力学 · 物理学 2020-12-02 Muhammad Sani , Siluvai Antony Selvan , Sukhendu Ghosh , Harekrushna Behera

We study the effects of externally imposed shear and buoyancy driven flows on the stability of a solid-liquid interface. By reanalyzing the data of Gilpin \emph{et al.} [\emph{J. Fluid Mech.}, {\bf 99}(3), 619 (1980)] we show that the…

流体动力学 · 物理学 2020-07-06 Srikanth Toppaladoddi , John S. Wettlaufer

We present an experimental study of immiscible, two-phase fluid flow through a three-dimensional porous medium consisting of randomly-packed, monodisperse glass spheres. Our experiments combine refractive-index matching and laser-induced…

The competition between the drive and stabilization of plasma microinstabilities by sheared flow is investigated, focusing on the ion temperature gradient mode. Using a twisting mode representation in sheared slab geometry, the…

等离子体物理 · 物理学 2015-05-19 Sarah L. Newton , Steve C. Cowley , Nuno F. Loureiro

This study performed a numerical analysis of the deformation and breakup of a liquid ligament with various disturbances on the interface in shear flow. The shear flow generates a three-dimensional flow and vortices around the liquid…

流体动力学 · 物理学 2024-06-26 Hideki Yanaoka , Wataru Sakamoto

An asymptotic interface equation for directional solidification near the absolute stabiliy limit is extended by a nonlocal term describing a shear flow parallel to the interface. In the long-wave limit considered, the flow acts…

凝聚态物理 · 物理学 2009-11-07 Yannick Marietti , Jean-Marc Debierre , Thomas-Michael Bock , Klaus Kassner

The parametric nonlinear Schrodinger equation models a variety of parametrically forced and damped dispersive waves. For the defocusing regime, we derive a normal velocity for the evolution of curved dark-soliton fronts that represent a…

偏微分方程分析 · 数学 2023-08-21 Keith Promislow , Abba Ramadan

We find that in simulations of quasi-statically sheared frictional disks, the shear jamming transition can be characterized by an abrupt jump in the number of force bearing contacts between particles. This mechanical coordination number…

软凝聚态物质 · 物理学 2020-04-07 H. A. Vinutha , Kabir Ramola , Bulbul Chakraborty , Srikanth Sastry

We consider the dynamics and kinetic roughening of wetting fronts in the case of forced wetting driven by a constant mass flux into a 2D disordered medium. We employ a coarse-grained phase field model with local conservation of density,…

无序系统与神经网络 · 物理学 2009-11-11 T. Laurila , C. Tong , I. Huopaniemi , S. Majaniemi , T. Ala-Nissila

The interface separating a liquid from its vapor phase is diffuse: the composition varies continuously from one phase to the other over a finite length. Recent experiments on dynamic jamming fronts in two dimensions [Waitukaitis et al.,…

软凝聚态物质 · 物理学 2025-11-18 Jikai Wang , J. M. Schwarz , Joseph D. Paulsen

We consider the conceptual two-layered oscillating tank of Inoue & Smyth (2009), which mimics the time-periodic parallel shear flow generated by low-frequency (e.g. semi-diurnal tides) and small-angle oscillations of the density interface.…

流体动力学 · 物理学 2026-02-03 Lima Biswas , Anirban Guha
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