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Drop impacts on solid and liquid surfaces exhibit complex dynamics due to the competition of inertial, viscous, and capillary forces. After impact, a liquid lamella develops and expands radially, and under certain conditions, the outer rim…

流体动力学 · 物理学 2012-03-06 Gabriel Juarez , Thomai Gastopoulos , Yibin Zhang , Michael L. Siegel , Paulo E. Arratia

The spreading of a cap-shaped spherical droplet of non-Newtonian power-law liquids on a completely wettable spherical substrate is theoretically studied. Both convex spherical substrates and concave spherical cavities with smooth or rough…

软凝聚态物质 · 物理学 2018-12-18 Masao Iwamatsu

In an effort to study the stability of contact lines in fluids, we consider the dynamics of a drop of incompressible viscous Stokes fluid evolving above a one-dimensional flat surface under the influence of gravity. This is a free boundary…

偏微分方程分析 · 数学 2019-07-15 Ian Tice , Lei Wu

The paper considers the dynamics of the spreading liquid droplets after impact on a solid surface. The dynamics of a drop falling on a solid surface is shown using numerical simulation based on the solution of 2D and 3D Navier-Stokes…

流体动力学 · 物理学 2022-07-15 Alexey Ivanovich Fedyushkin , Aleksey Nikolaevich Rozhkov

A drop of water that freezes from the outside-in presents an intriguing problem: the expansion of water upon freezing is incompatible with the self-confinement by a rigid ice shell. Using high-speed imaging we show that this conundrum is…

流体动力学 · 物理学 2017-04-05 Sander Wildeman , Sebastian Sterl , Chao Sun , Detlef Lohse

We study theoretically the hydrodynamics of a fluid drop containing oriented filaments endowed with active contractile or extensile stresses and placed on a solid surface. The active stresses alter qualitatively the wetting properties of…

软凝聚态物质 · 物理学 2015-06-03 Jean-Francois Joanny , Sriram Ramaswamy

Using direct numerical simulations, the fragmentation of falling liquid droplets in a quiescent media is studied. Three simulations with different Eotvos numbers were performed. An adaptive volume of fluid(VOF) method based on octree…

流体动力学 · 物理学 2011-10-18 M. Jalaal , M. Schwalbach , K. Mehravaran

We investigate the impact velocity beyond which the ejection of smaller droplets from the main droplet (splashing) occurs for droplets impacting a smooth surface. We examine its dependence on the surface wetting properties and droplet…

流体动力学 · 物理学 2017-01-11 T. C. de Goede , K. G. de Bruin , D. Bonn

Drop coalescence is central to diverse processes involving dispersions of drops in industrial, engineering and scientific realms. During coalescence, two drops first touch and then merge as the liquid neck connecting them grows from…

The complex fluidic nature of blood, though necessary to serve different physiological purposes, gives rise to daunting challenges in developing unified conceptual paradigm describing the underlying physics of blood at pinch, which may…

流体动力学 · 物理学 2016-05-20 Shantimoy Kar , Aritra Kar , Kaustav Chaudhury , Tapas Kumar Maiti , Suman Chakraborty

We experimentally investigate the evaporation dynamics of sessile water droplets on a micro-nano textured superhydrophobic aluminum substrate at various temperatures using shadowgraphy imaging. By comparing the evaporation behavior of two…

流体动力学 · 物理学 2025-07-02 Sivanandan Kavuri , Chander Shekhar Sharma , George Karapetsas , Kirti Chandra Sahu

In this review article, we discuss recent studies on drops and bubbles in Hele-Shaw cells, focusing on how scaling laws exhibit crossovers from the three-dimensional counterparts and focusing on topics in which viscosity plays an important…

软凝聚态物质 · 物理学 2017-07-20 Ko Okumura

Droplet breakup is a well studied phenomena in Newtonian fluids. One property of this behavior is that, independent of initial conditions, the minimum radius exhibits power law scaling with the time left to breakup tau. Because they have…

流体动力学 · 物理学 2012-12-27 Benjamin Nachman , Itai Cohen

The axisymmetric deformation and motion of interacting droplets in an imposed temperature gradient is considered using boundary-integral techniques for slow viscous motion. Results showing temporal drop motion, deformations and separation…

流体动力学 · 物理学 2007-05-23 V. Berejnov , O. M. Lavrenteva , A. Nir

The coalescence of water drops on a substrate is studied experimentally. We focus on the rapid growth of the bridge connecting the two drops, which very quickly after contact ensues from a balance of surface tension and liquid inertia. For…

流体动力学 · 物理学 2013-07-30 A. Eddi , K. G. Winkels , J. H. Snoeijer

To understand the behavior of composite fluid particles such as nucleated cells and double-emulsions in flow, we study a finite-size particle encapsulated in a deforming droplet under shear flow as a model system. In addition to its…

流体动力学 · 物理学 2019-06-06 Lailai Zhu , François Gallaire

The development of substrates with a switchable wettability is on a fast pace. The limit of switching frequencies and contact angle differences between substrate states are steadily pushed further. We investigate the behavior of a droplet…

流体动力学 · 物理学 2022-04-01 Leon Topp , Moritz Stieneker , Svetlana Gurevich , Andreas Heuer

We follow the dynamic evolution of a cluster of Ising spins pointing up surrounded by other spins pointing down, on a lattice. The cluster represents a liquid drop. Under a microscopic point of view, the short range ferromagnetic coupling…

Experimental observations of droplet size sustained oscillations are reported in a two-phase flow between a lamellar and a sponge phase. Under shear flow, this system presents two different steady states made of monodisperse multilamellar…

软凝聚态物质 · 物理学 2009-11-10 Laurent Courbin , Pascal Panizza , Jean-Baptiste Salmon

It has been shown in our previous publication (Blawzdziewicz,Cristini,Loewenberg,2003) that high-viscosity drops in two dimensional linear creeping flows with a nonzero vorticity component may have two stable stationary states. One state…

软凝聚态物质 · 物理学 2015-05-13 Yuan N. Young , Jerzy Blawzdziewicz , Vitorio Cristini , Roy Goodman