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Experimental and Numerical Analysis of Air Trapping in a Porous Medium with Coarse Textured Inclusions
Abstract
The paper presents a 2D upward infiltration experiment performed on a model porous medium consisting of fine sand background with two inclusions made of coarser sands. The purpose of the experiment was to investigate the effects of structural air trapping, which occurs during infiltration as a result of heterogeneous material structure. The experiment shows that a significant amount of air becomes trapped in each of the inclusions. Numerical simulations were carried out using the two-phase water-air flow model and the Richards equation. The experimental results can be reproduced with good accuracy only using a two-phase flow model, which accounts for both structural and pore-scale trapping. On the other hand, the Richards equation was not able to represent the structural trapping caused by material heterogeneity.
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Authors (6)
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Cindi Schutz mgr inż.
- Institute of Fluid Mechanics and Environmental Physics in Civil Engineering .
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Insa Neuweiler
- Institute of Fluid Mechanics and Environmental Physics in Civil Engineering .
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Rainer Helmig
- Institute of Modeling of Hydraulic and Environmental Systems .
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Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1515/acgeo-2016-0095
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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Acta Geophysica
no. 64,
pages 2487 - 2509,
ISSN: 1895-6572 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Szymańska P., Tisler W., Szymkiewicz A., Schutz C., Neuweiler I., Helmig R.: Experimental and Numerical Analysis of Air Trapping in a Porous Medium with Coarse Textured Inclusions// Acta Geophysica. -Vol. 64, nr. 6 (2016), s.2487-2509
- DOI:
- Digital Object Identifier (open in new tab) 10.1515/acgeo-2016-0095
- Verified by:
- Gdańsk University of Technology
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