Particle transport in a nonuniform flow field: Retardation and clogging

Julio R. Valdes*, Juan Carlos Santamarina

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The authors examine the time delays experienced by migratory particles inside nonuniform flow fields using experimental and numerical methods. Particle trajectories are affected by the particle-fluid density ratio and the flow direction, such that particles may precede or trail the fluid. In flow toward an orifice, the time delay suffered by a single particle is a function of the Froude number Fr and the Archimedes number Ar. When multiple particles are transported radially through a porous medium, time delays manifest through localized annular clogging when 0.05< Ar-1 <0.15 and Fr<6. Gradual particle sedimentation occurs when Ar-1 >1. Applications include filtration and reservoir fluid extraction.

Original languageEnglish (US)
Article number244101
JournalApplied Physics Letters
Volume90
Issue number24
DOIs
StatePublished - Jun 22 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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