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Thursday, July 9, 2020 | History

2 edition of **Low Reynolds number particle-fluid interactions** found in the catalog.

Low Reynolds number particle-fluid interactions

Andrea Claire Bodnar

- 303 Want to read
- 15 Currently reading

Published
**1994**
by [s.n.] in Toronto
.

Written in English

**Edition Notes**

Statement | Andrea Claire Bodnar. |

ID Numbers | |
---|---|

Open Library | OL14952051M |

Motion of a Circular Particle in Wall Driven Flow at Low Reynolds Numbers. CrossRef; Google Scholar paper presents experimental measurements of the approach and rebound of a particle colliding with a wall in a viscous fluid. The particle's trajectory was controlled by setting the initial inclination angle of a pendulum immersed in a fluid Online shopping forum for Fluid Structure Interactions By and Fluid Structure Interactions By accessories from a great selection on Ebay. $ Fluid-Structure Interactions in Low-Reynolds-Number Flows by Camille Duprat: New /

The migration of neutrally buoyant finite sized particles in a Newtonian square channel flow is investigated in the limit of very low solid volumetric concentration, within a wide range of channel Reynolds numbers Re = []. In situ microscope measurements of particle distributions, taken far from the channel inlet (at a distance several thousand times the channel height), revealed that The existing drag models are shown to poorly capture the forces on individual particles in the samples for flow with low Reynolds number values. An alternative approach is proposed in which a radical Voronoi tesselation is applied to estimate a local solids volume fraction for each particle; this local solids fraction can be adopted in

The low Reynolds number motion and deformation of a neutrally buoyant drop (immersed in a different viscous fluid) due to its interaction with a translating solid particle (immersed in the same fluid) is studied. This is achieved by means of a system of second-kind Fredholm integral :// The problem of slow motion of a slender body near a wall is investigated using the singularity method along with uniformly valid asymptotic expansions. Two

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Except for the Stokes regime of particle motions when the particle Reynolds number is smaller than (or, less strictly, smaller than unity), simply adding in any type of CFD simulation a number of expressions derived for specific canonical cases to get the correct total interaction force conflicts with the nonlinear character of fluid flow low reynolds number hydrodynamics Download low reynolds number hydrodynamics or read online books in PDF, EPUB, Tuebl, and Mobi Format.

Click Download or Read Online button to get low reynolds number hydrodynamics book now. This site is like a library, Use JEAN M. DéLERY, in Handbook of Shock Waves, Transitional Interactions.

Low Reynolds number interactions remain rarely entirely laminar, the shock being a very effective way to trigger transition. In most practical situations, such as control surfaces of a hypersonic vehicle or turbomachine blades, one has to predict a transitional interaction that is laminar during separation Reynolds number ﬂ ows, with the increase in the number of conta cts roughly cons tant with timeuntil t ≈ s, after which there is a reduc- tion in the rat e of contact occ :// Close to the walls, the number of agglomerates is approximately equal, although the highest Re τ case tends to have the largest number of contacts in this region, with the number of contacts at all locations significantly greater than in the low Reynolds number case.

This particle behaviour reflects the higher turbulence levels in the Re τ Behavior of particle swarms at low and moderate Reynolds numbers using computational fluid dynamics—Discrete element model “ Particle clustering due to hydrodynamic interactions,” Phys.

Flu (). “ Sedimentation of hard-sphere suspensions at low Reynolds number,” J. Fluid Mech. 73 Julien Férec, Gilles Ausias, in Rheology of Non-Spherical Particle Suspensions, Particle Reynolds and Peclet numbers, and sedimentation. A fiber suspended in a Newtonian fluid is assumed to be an inertialess rod if the particle Reynolds number N Re is sufficiently small, that is N Re = ρ d p γ.

/ η 0 ≪ 1, where ρ is the fluid density and d p is a characteristic dimension of Experimental observations of the flow of a suspension of solid fraction ${\it\phi}\approx $ over a circular cylindrical post in a shallow microchannel (depth smaller than the cylinder radius) find that the recirculating wake behind the obstacle at moderate Reynolds numbers is depleted or devoid of particles.

Particles injected into the wake exit to regain the depleted :// Fluid-structure interactions have been well studied over the years but most of the focus has been on high Reynolds number flows, inertially dominated flows where the drag force from the fluid typically varies as the square of the local fluid speed.

There are though a large number of fluid-structure interaction problems at low values of the Reynolds number, where the fluid effects are dominated Abstract. Low Reynolds number flow theory finds wide application in such diverse fields as sedimentation, fluidization, particle-size classification, dust and mist collection, filtration, centrifugation, polymer and suspension rheology, flow through porous media, colloid science, aerosol and hydrosal technology, lubrication theory, blood flow, Brownian motion, geophysics, meteorology, and a Computers & Fluids is multidisciplinary.

The term 'fluid' is interpreted in the broadest - and aerodynamics, high-speed and physical gas dynamics, turbulence and flow stability, multiphase flow, rheology, tribology and fluid-structure interaction are all of interest, provided that computer technique plays a significant role in the associated studies or design :// The results showed complex hydrodynamic interactions between a particle and a liquid causing settling orientation instabilities and unsteady particle descent in low to moderate Reynolds number :// Subramanian and Koch [10] propose three regimes in the evolution of a suspension drop as shown in Fig.

1 (Re p = ρV 0 a/µ is the particle-based Reynolds number, a is the particle radius and V 0 For low-viscous fluid, particle Reynold number is large ( ≤ Re ≤ ), the mechanical interaction-induced retardation is dominant, while the mechanical interaction-induced retardation is ignored for high-viscous fluid with small particle Reynold number ( ≤ Re ≤ ).

Download: Download high-res image (KB) The hbydrodynamic force on a rigid particle undergoing arbitrary time-dependent motion at small Reynolds number.

Journal of Fluid Mechanics– (). Lucretius, “On The Nature of Things,” translated by WE Leonard, reprinted by Dover, New York (). In Fluid-structure Interactions in Low-Reynolds-Number Flows (ed. Duprat, C. & Stone, H. A.), chap.

2, pp. 25 – Royal Society of Chemistry. Stone, H. Heat/mass transfer from surface films to shear flows at arbitrary Peclet :// The near field of a turbulent circular pipe jet laden with rigid rod-like particles is investigated experimentally by means of particle image velocimetry.

Two mass fraction loadings are examined at a Reynolds number equal to 9, A simple and robust phase discrimination scheme based on image intensity threshold is presented and :// Hydrodynamic interactions at low Reynolds number: An overlooked mechanism favouring diatom encounters Article (PDF Available) in Journal of Plankton Research 35(4) The motion of a spherical particle (with radius 1 to 6 mm) in a viscous fluid is measured using laser interferometry.

The typical sensitivity on the measured displacement of the sphere is of the order of 50 nm. The particle is moving on the axis of a closed cylinder. The hydrodynamic interactions between the particle and the walls of the cylinder are compared with the theoretical result of The motion of a single elliptical cylinder is shown to be dependent on the channel Reynolds number Re, the particle size ratio K = a*/H*, and the aspect ratio A = a*/b* of the cylinder, where H.

From the book: Fluid-Structure Interactions in Low-Reynolds-Number Flows CHAPTER 9 Dynamics of Membrane-Bound Particles: Capsules and Vesicles. Petia M. Vlahovska Low Reynolds number motion of bubbles, drops and rigid spheres through fluid–fluid interfaces - Volume - Michael Manga, H.

A. Stone Reynolds number effects, e.g. through internal intermittency and potential modifications to the spatial-temporal structure of the flow.

Theoretical studies by Falkovich et al. () conjectured that an increase of the Reynolds number could lead to larger particle-pair RV through the enhanced intermittency of the fluid velocity ://