EGEL
Energy GeoEngineering Laboratory

Particle transport in a nonuniform flow field: Retardatino and clogging

Particle transport in a nonuniform flow field: Retardatino and clogging

​Valdes, J. R. and Santamarina, J. C. (2007). "Particle transport in a nonuniform flow field: Retardatino and clogging." Applied Physical Letters, Vol. 90
Julio R. Valdes and J. Carlos Santamarina
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2007
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.