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We investigate the effect of inertial particles dispersed in a circular patch of finite radius on the stability of a two-dimensional Rankine vortex in semi-dilute dusty flows. Unlike the particle-free case where no unstable modes exist, we…

流体动力学 · 物理学 2022-10-05 Shuai Shuai , Darish Jeswin Dhas , Anubhab Roy , M. Houssem Kasbaoui

We study the dynamics of inertial particles in two dimensional incompressible flows. The Maxey-Riley equation describing the motion of inertial particles is used to construct a four dimensional dissipative bailout embedding map. This map…

混沌动力学 · 物理学 2008-11-25 Neelima Gupte , N. Nirmal Thyagu

We identify effective carriers of \emph{Sargassum} in the Caribbean Sea and describe a mechanism for coastal choking. Revealed from satellite altimetry, the carriers of \emph{Sargassum} are mesoscale eddies (vortices of 50-km radius or…

大气与海洋物理 · 物理学 2022-02-02 F. Andrade-Canto , F. J. Beron-Vera , G. J. Goni , D. Karrasch , M. J. Olascoaga , J. Trinanes

We consider the rotation of small neutrally buoyant axisymmetric particles in a viscous steady shear flow. When inertial effects are negligible the problem exhibits infinitely many periodic solutions, the "Jeffery orbits". We compute how…

流体动力学 · 物理学 2015-05-01 J. Einarsson , F. Candelier , F. Lundell , J. R. Angilella , B. Mehlig

Viscous streaming has emerged as an effective method to transport, trap, and cluster inertial particles in a fluid. Previous work has shown that this transport is well described by the Maxey-Riley equation augmented with a term representing…

流体动力学 · 物理学 2020-08-26 Mathieu Le Provost , Jeff D. Eldredge

The particle trajectories in irrotational, incompressible and inviscid deep-water surface gravity waves are open, leading to a net drift in the direction of wave propagation commonly referred to as the Stokes Drift, which is responsible for…

流体动力学 · 物理学 2024-09-11 Aidan Blaser , Raphaël Benamran , A. Bia Villas Bôas , Luc Lenain , Nick Pizzo

In recent years, manipulation of particles by inertial microfluidics has attracted significant attention. Most studies focused on inertial focusing of particles suspended within liquid phase, in which the ratio of the density of the…

流体动力学 · 物理学 2018-12-07 Maoqiang Jiang , Shizhi Qian , Zhaohui Liu

Recent surveys of marine plastic debris density have revealed high levels in the center of the subtropical gyres. Earlier studies have argued that the formation of great garbage patches is due to Ekman convergence in such regions. In this…

大气与海洋物理 · 物理学 2017-01-25 Francisco J. Beron-Vera , Maria J. Olascoaga , Rick Lumpkin

In their seminal 1983 paper, M. Maxey and J. Riley introduced an equation for the motion of a sphere through a fluid. Since this equation features the Basset history integral, the popularity of this equation has broadened the use of a…

经典分析与常微分方程 · 数学 2021-11-17 Dan Crisan , Oliver D. Street

At finite Reynolds numbers particles migrate across flow streamlines to their equilibrium positions in microchannels. Such a migration is attributed to an inertial lift force, and it is well-known that the equilibrium location of…

软凝聚态物质 · 物理学 2020-01-17 Tatiana V. Nizkaya , Evgeny S. Asmolov , Jens Harting , Olga I. Vinogradova

Transport phenomena in complex and dynamic microscopic environments are fundamentally shaped by hydrodynamic interactions. In particular, microparticle transport in porous media is governed by the delicate interplay between…

We study the effect of surface gravity waves on the motion of inertial particles in an incompressible fluid. Using the multiple-scale technique, we perform an analytical calculation which allows us to predict the dynamics of such particles;…

流体动力学 · 物理学 2013-01-25 G. Boffetta , M. Martins Afonso , A. Mazzino , M. Onorato , F. Santamaria

This study examines the motion of spherical inertial particles in a three-dimensional rotating cylindrical vortex - a simplified model of geophysical flow structures such as oceanic eddies. The analytical vortex formulation enables the…

流体动力学 · 物理学 2025-06-12 Orr Avni , Alok Kumar , Yuval Dagan

We investigate the dynamics of small inertial particles in a two-dimensional, steady Taylor-Green vortex flow. A classic study by Taylor (2022) showed that heavy inertial point particles (having density parameter R = 1) are trapped by the…

流体动力学 · 物理学 2025-03-11 Prabhash Kumar , Anu V. S. Nath , Mahesh Panchagnula , Anubhab Roy

Recent experimental and numerical observations have shown the significance of the Basset--Boussinesq memory term on the dynamics of small spherical rigid particles (or inertial particles) suspended in an ambient fluid flow. These…

数学物理 · 物理学 2014-09-03 Gabriel Provencher Langlois , Mohammad Farazmand , George Haller

Small heavy particles cannot get attracted into a region of closed streamlines in a non-accelerating frame (Sapsis & Haller 2010). In a rotating system, however, particles can get trapped (Angilella 2010) near vortices. We perform numerical…

流体动力学 · 物理学 2025-02-12 Saumav Kapoor , Divya Jaganathan , Rama Govindarajan

To describe many-particle systems suspended in incompressible low-Reynolds-number fluids, effective hydrodynamic interactions can be introduced. Here, we consider particles embedded in elastic media. The effective elastic interactions…

软凝聚态物质 · 物理学 2017-02-07 Mate Puljiz , Shilin Huang , Günter K. Auernhammer , Andreas M. Menzel

We report on an investigation of the vertical transport of tracer particles released within a shallow, continuously-forced flow by means of numerical simulations. The investigation is motivated by the shallow flows encountered in many…

We present experimental observations of the spatial distribution of large inertial particles suspended in a turbulent swirling flow at high Reynolds number. The plastic particles, which are tracked using several high speed cameras, are…

流体动力学 · 物理学 2023-03-27 Benjamin Laplace , Jérémy Vessaire , David Oks , Oliver Tolfts , Mickael Bourgoin , Romain Volk

A flowing pair of particles in inertial microfluidics gives important insights into understanding and controlling the collective dynamics of particles like cells or droplets in microfluidic devices. They are applied in medical cell analysis…

流体动力学 · 物理学 2018-05-25 Christian Schaaf , Felix Rühle , Holger Stark