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Fluid flow induced deformation of porous medium: modeling of the no erosion filter test experiment
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
2010 (English)In: Proceedings of the 3rd International Conference on Porous Media and its Applications in Science and Engineering: ICPM3, 2010Conference paper, Published paper (Refereed)
Abstract [en]

To study internal erosion in depth it is necessary to know either the detailed flow or how it varies in a statistical manner. It is also important to know how the internal erosion process initiates and progresses due to the fluid flow-induced forces. The underlying reason for this is that internal erosion will initiate exactly where the forces from the fluid are higher than the retaining forces that keep the particles together. Hence, a new model is here developed where fluid flow induced deformations of a large number of particles is studied. The model is applied to the No Erosion Filter test and simulated results resemble experimental results from the literature. The NEF test is used to investigate parameters such as the hydraulic conductivity and also in detail the process of internal erosion. The simulations are performed on different set-ups to exemplify successful and unsuccessful sealing. In the model, minimization of the dissipation rate of energy is accompanied with discretization of the system with modified Voronoi diagrams. Then Computational Fluid Dynamics is applied to solve the flow within each part of the Voronoi diagrams. Different parameters, such as the vorticity, calculated with the CFD-software are then used as input to the Monte Carlo-simulations. An overall good conformity between simulated results and experimental results from the literature is obtained.

Place, publisher, year, edition, pages
2010.
Keywords [en]
Engineering mechanics - Fluid mechanics
Keywords [sv]
Teknisk mekanik - Strömningsmekanik
National Category
Fluid Mechanics and Acoustics Geotechnical Engineering
Research subject
Fluid Mechanics; Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-32497Local ID: 70372890-d79b-11df-8b36-000ea68e967bOAI: oai:DiVA.org:ltu-32497DiVA, id: diva2:1005731
Conference
International Conference on Porous Media and its Applications in Science and Engineering and Industry : 20/06/2010 - 25/06/2010
Note
Godkänd; 2010; Bibliografisk uppgift: Proceedings på CD; 20101014 (gunhel)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Frishfelds, VilnisHellström, J. Gunnar I.Lundström, StaffanMattsson, Hans

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