Characteristics of flow through randomly packed impermeable and permeable particles using pore resolved simulations

Vimal Ramanuj; Vitalii Starchenko; Ramanan Sankaran; Michelle K. Kidder

doi:10.1016/j.ces.2020.115969

Characteristics of flow through randomly packed impermeable and permeable particles using pore resolved simulations

Vimal Ramanuj, Vitalii Starchenko, Ramanan Sankaran, Michelle K. Kidder

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Abstract

Pore resolved simulations are performed to study the mean flow characteristics in porous media formed by random distribution of impermeable and permeable particles. Permeability of the medium and reactive surface areas are analyzed for a range of solid fractions, packing patterns and flow rates. The results are compared with models presented in the literature and with simulations of flow through ordered packings. Permeability of a randomly packed porous medium is found to depend on the heterogeneous distribution of porosity which results from particle agglomeration and is typically ignored by simpler models. The reactive surface area is dependent on the flow field at pore scale in addition to geometry. Moreover, the wake formed downstream of the particles at moderately high flow rates also affects the reactive surface area. Similar analysis is also performed by assuming particles to be permeable to account for dual scale porosity relevant for various engineering applications.

Original language	English
Article number	115969
Journal	Chemical Engineering Science
Volume	228
DOIs	https://doi.org/10.1016/j.ces.2020.115969
State	Published - Dec 31 2020

Funding

The research is funded by the Laboratory Directed Research and Development Program of Oak Ridge National Laboratory and used resources of the Compute and Data Environment for Science (CADES) at the Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. Notice: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ).

Keywords

Dual porosity
Permeability
Porous media
Random packing

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title = "Characteristics of flow through randomly packed impermeable and permeable particles using pore resolved simulations",

abstract = "Pore resolved simulations are performed to study the mean flow characteristics in porous media formed by random distribution of impermeable and permeable particles. Permeability of the medium and reactive surface areas are analyzed for a range of solid fractions, packing patterns and flow rates. The results are compared with models presented in the literature and with simulations of flow through ordered packings. Permeability of a randomly packed porous medium is found to depend on the heterogeneous distribution of porosity which results from particle agglomeration and is typically ignored by simpler models. The reactive surface area is dependent on the flow field at pore scale in addition to geometry. Moreover, the wake formed downstream of the particles at moderately high flow rates also affects the reactive surface area. Similar analysis is also performed by assuming particles to be permeable to account for dual scale porosity relevant for various engineering applications.",

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Characteristics of flow through randomly packed impermeable and permeable particles using pore resolved simulations

Abstract

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Keywords

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