Imperial College London
Alternate

ProfessorPeterKing

Faculty of Engineering, Department of Earth Science & Engineering

Chair in Porous Media Physics
 
 
 
//

Contact

 

+44 (0)20 7594 7362peter.king

 
 
//

Location

 

1.40Royal School of MinesSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Gago:2020:10.1016/j.advwatres.2019.103454,
author = {Gago, P and Raeini, A and King, P},
doi = {10.1016/j.advwatres.2019.103454},
journal = {Advances in Water Resources},
pages = {1--7},
title = {A spatially resolved fluid-solid interaction model for dense granular packs/Soft-Sand.},
url = {http://dx.doi.org/10.1016/j.advwatres.2019.103454},
volume = {136},
year = {2020}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Fluid flow through dense granular packs or soft sands can be described as a Darcy’ s flow for low injection rates, as the friction between grain-grain and grain-walls dominate the solid system behaviour. For high injection rates, fluid forces can generate grain displacement forming flow channels or “fractures”, which in turn modify local properties within the system, such as permeability and stress distribution. Due to this kind of “self organized” behaviour, a spatially resolved model for these interactions is required to capture the dynamics of these systems. In this work, we present a resolved model based on the approach taken by the CFDEM open source project which uses LIGGGHTS – a discrete elements method (DEM)– to model the granular behaviour and OpenFoam finite volume library for computational fluid dynamics (CFD), to simulate the fluid behaviour. The capabilities provided by the DEM engine allows the properties of the solid phase, such as inter-grain cohesion and solid confinement stress to be controlled. In this work the original solver provided by the CFDEM project was modified so as to deal with dense granular packs more effectively. Advantages of the approach presented are that it does not require external “scaling parameters” to reproduce well known properties of porous materials and that it inherits the performance provided by the CFDEM project. The model is validated by reproducing the well-known properties of static porous materials, such as its permeability as a function of the system porosity, and by calculating the drag coefficient for a sphere resting inside a uniform flow. Finally, we present fracture patterns obtained when modelling water injection into a Hele-Shaw cell, filled with a dense granular pack.
AU  - Gago,P
AU  - Raeini,A
AU  - King,P
DO  - 10.1016/j.advwatres.2019.103454
EP  - 7
PY  - 2020///
SN  - 0309-1708
SP  - 1
TI  - A spatially resolved fluid-solid interaction model for dense granular packs/Soft-Sand.
T2  - Advances in Water Resources
UR  - http://dx.doi.org/10.1016/j.advwatres.2019.103454
UR  - https://www.sciencedirect.com/science/article/pii/S0309170819303756
UR  - http://hdl.handle.net/10044/1/74603
VL  - 136
ER  -
Download