# An experimental study of particle effects on drop formation

@article{Furbank2004AnES, title={An experimental study of particle effects on drop formation}, author={Roy J. Furbank and Jeffrey F. Morris}, journal={Physics of Fluids}, year={2004}, volume={16}, pages={1777-1790} }

The formation of drops of particulate suspensions composed of spherical, neutrally buoyant, noncolloidal particles in a viscous liquid is examined experimentally. The suspensions are investigated over a range of particle volume fractions, φ=nπdp3/6 where n is the particle number density and dp is the particle diameter (dp=212–250 μm in most of the experiments), and for flow through three tubes of outer diameters d=0.16, 0.32 and 0.64 cm; the corresponding inner diameters are 0.10, 0.22, and 0…

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## References

SHOWING 1-10 OF 52 REFERENCES

Migration of particles undergoing pressure-driven flow in a circular conduit

- Physics
- 1997

This study focuses on the demixing of neutrally buoyant suspensions of spheres during slow, pressure driven flows in circular conduits. Distributions of the solid fraction of particles, φ, and the…

Interfacial phenomena in suspensions

- Physics
- 1999

Recent resuspension experiments suggest that a possible interfacial tension exists between pure fluid and suspension consisting of the same fluid and heavy, small solid beads of identical size and…

An experimental study of dynamics of drop formation

- Physics
- 1995

A liquid being ejected from a nozzle emanates from it as discrete, uniformly sized drops when the flow rate is sufficiently low. In this paper, an experimental study is presented of the dynamics of a…

Pressure-driven flow of suspensions: simulation and theory

- PhysicsJournal of Fluid Mechanics
- 1994

Dynamic simulations of the pressure-driven flow in a channel of a non-Brownian suspension at zero Reynolds number were conducted using Stokesian Dynamics. The simulations are for a monolayer of…

Curvilinear flows of noncolloidal suspensions: The role of normal stresses

- Engineering
- 1999

The role of normal stresses in causing particle migration and macroscopic spatial variation of the particle volume fraction φ in a mixture of rigid neutrally buoyant spherical particles suspended in…

Modelling of concentrated suspensions using a continuum constitutive equation

- PhysicsJournal of Fluid Mechanics
- 1998

We simulate the behaviour of suspensions of large-particle, non-Brownian, neutrally-buoyant spheres in a Newtonian liquid with a Galerkin, finite element, Navier–Stokes solver into which is…

2003 Francois Frankiel Award: Experimental study of gravity-driven dense suspension jets

- Physics
- 2002

This article presents experimental results from a study of a jet of dense suspension falling under gravity in a quiescent liquid bath of miscible liquid. The initial jet velocity v0 scales with the…

Drop formation from a capillary tube: Comparison of one-dimensional and two-dimensional analyses and occurrence of satellite drops

- Physics
- 2002

The axisymmetric formation of drops of Newtonian liquids from a vertical capillary into air is governed by the three-dimensional but axisymmetric Navier–Stokes system and appropriate boundary and…

Computational and experimental analysis of dynamics of drop formation

- Physics
- 1999

Dynamics of formation of a drop of a Newtonian liquid from a capillary tube into an ambient gas phase is studied computationally and experimentally. While this problem has previously been studied…