Experimental observation and pressure drop modeling of plug formation in horizontal millifluidic hydraulic conveying - Mines Saint-Étienne Access content directly
Journal Articles Physical Therapy Reviews Year : 2024

Experimental observation and pressure drop modeling of plug formation in horizontal millifluidic hydraulic conveying

Abstract

The hydraulic conveying of glass beads is studied in a horizontal tube. At low flow rates, plugs can be observed moving across the tube, whereas pseudoplugs can be seen at higher flow rates. A statistical analysis of the plugs' and pseudoplugs' velocities and the plugs' lengths observed is conducted. A transition of the propagation speed distribution is established when the crossing over from a plug to a pseudoplug regime is reached, where the peaked plug velocity distribution turns into a uniform pseudoplug velocity distribution. On the other hand, the statistical distribution of plug lengths exhibits a log-normal mathematical shape. The interpretation of the measured pressure drop evolution with the imposed flow rate by means of an effective viscosity shows an apparent shear-thinning effect coming from the dilution of the granular material. This approach provides a predictive tool for pressure drop calculation in the pseudoplug regime.
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Avant la publication
Friday, October 25, 2024
Embargoed file
Friday, October 25, 2024
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Dates and versions

emse-04565964 , version 1 (13-05-2024)

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Marc Fischer, Étienne Gagnepain, Guillaume Dumazer. Experimental observation and pressure drop modeling of plug formation in horizontal millifluidic hydraulic conveying. Physical Therapy Reviews, 2024, 109 (4), pp.044906. ⟨10.1103/PhysRevE.109.044906⟩. ⟨emse-04565964⟩
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