An experimental and theoretical investigation of particle-wall impacts in a T-junction

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An experimental and theoretical investigation of particle-wall impacts in a T-junction. / Vigolo, Daniele; Griffiths, I. M.; Radl, S.; Stone, H. A.

In: Journal of Fluid Mechanics, Vol. 727, 07.2013, p. 236-255.

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Vigolo, Daniele ; Griffiths, I. M. ; Radl, S. ; Stone, H. A. / An experimental and theoretical investigation of particle-wall impacts in a T-junction. In: Journal of Fluid Mechanics. 2013 ; Vol. 727. pp. 236-255.

Bibtex

@article{e0ec72e67a254d87817ec65e50b7285b,
title = "An experimental and theoretical investigation of particle-wall impacts in a T-junction",
abstract = "Understanding the behaviour of particles entrained in a fluid flow upon changes in flow direction is crucial in problems where particle inertia is important, such as the erosion process in pipe bends. We present results on the impact of particles in a T-shaped channel in the laminar-turbulent transitional regime. The impacting event for a given system is described in terms of the Reynolds number and the particle Stokes number. Experimental results for the impact are compared with the trajectories predicted by theoretical particle-tracing models for a range of configurations to determine the role of the viscous boundary layer in retarding the particles and reducing the rate of collision with the substrate. In particular, a two-dimensional model based on a stagnation-point flow is used together with three-dimensional numerical simulations. We show how the simple two-dimensional model provides a tractable way of understanding the general collision behaviour, while more advanced three-dimensional simulations can be helpful in understanding the details of the flow.",
keywords = "Multiphase and particle-laden flows, Particle/fluid flow, Pipe flow boundary layer",
author = "Daniele Vigolo and Griffiths, {I. M.} and S. Radl and Stone, {H. A.}",
year = "2013",
month = jul,
doi = "10.1017/jfm.2013.200",
language = "English",
volume = "727",
pages = "236--255",
journal = "Journal of Fluid Mechanics",
issn = "0022-1120",
publisher = "Cambridge University Press",

}

RIS

TY - JOUR

T1 - An experimental and theoretical investigation of particle-wall impacts in a T-junction

AU - Vigolo, Daniele

AU - Griffiths, I. M.

AU - Radl, S.

AU - Stone, H. A.

PY - 2013/7

Y1 - 2013/7

N2 - Understanding the behaviour of particles entrained in a fluid flow upon changes in flow direction is crucial in problems where particle inertia is important, such as the erosion process in pipe bends. We present results on the impact of particles in a T-shaped channel in the laminar-turbulent transitional regime. The impacting event for a given system is described in terms of the Reynolds number and the particle Stokes number. Experimental results for the impact are compared with the trajectories predicted by theoretical particle-tracing models for a range of configurations to determine the role of the viscous boundary layer in retarding the particles and reducing the rate of collision with the substrate. In particular, a two-dimensional model based on a stagnation-point flow is used together with three-dimensional numerical simulations. We show how the simple two-dimensional model provides a tractable way of understanding the general collision behaviour, while more advanced three-dimensional simulations can be helpful in understanding the details of the flow.

AB - Understanding the behaviour of particles entrained in a fluid flow upon changes in flow direction is crucial in problems where particle inertia is important, such as the erosion process in pipe bends. We present results on the impact of particles in a T-shaped channel in the laminar-turbulent transitional regime. The impacting event for a given system is described in terms of the Reynolds number and the particle Stokes number. Experimental results for the impact are compared with the trajectories predicted by theoretical particle-tracing models for a range of configurations to determine the role of the viscous boundary layer in retarding the particles and reducing the rate of collision with the substrate. In particular, a two-dimensional model based on a stagnation-point flow is used together with three-dimensional numerical simulations. We show how the simple two-dimensional model provides a tractable way of understanding the general collision behaviour, while more advanced three-dimensional simulations can be helpful in understanding the details of the flow.

KW - Multiphase and particle-laden flows

KW - Particle/fluid flow

KW - Pipe flow boundary layer

UR - http://www.scopus.com/inward/record.url?scp=84886304043&partnerID=8YFLogxK

U2 - 10.1017/jfm.2013.200

DO - 10.1017/jfm.2013.200

M3 - Article

AN - SCOPUS:84886304043

VL - 727

SP - 236

EP - 255

JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

SN - 0022-1120

ER -