Hydraulic transport regimes of grains in a millifluidic confinement

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Hydraulic transport regimes of grains in a millifluidic confinement

Authors
  • Dumazer, Guillaume
  • Gagnepain, Étienne
Type
Published Article
Journal
EPJ Web of Conferences
Publisher
EDP Sciences
Publication Date
Jun 07, 2021
Volume
249
Identifiers
DOI: 10.1051/epjconf/202124909013
Source
EDP Sciences
Disciplines
  • Fluids and Particles
License
Green
External links

Abstract

Granular matter transported by hydraulic conveying behaves under several transport regimes. The techncal challenge is to predict the dilute or dense regime of transport as well as the pressure drop required in order to design properly a granular hydraulic conveying system. We address this problem with a laboratory scale experimental setup able to reproduce the key features of hydraulic conveying of grains. Pressure drop measurements as well as image analysis have been used to characterize a slug transport regime and its crossover towards a moving bed transport regime. A dimensionless characteristic curves diagram has been established and a reasonably good pressure drop prediction with a generic power law is explained in details. This preliminary work has the potential to open perspectives for the design of a predictive tool for pressure drops in hydraulic conveying systems.

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