Multi-rate mass transfer modeling of two-phase flow in highly heterogeneous fractured and porous media
We study modeling of two-phase flow in highly heterogeneous fractured and porous media. The flow behaviour is strongly influenced by mass transfer between a highly permeable (mobile) fracture domain and less permeable (immobile) matrix blocks. We quantify the effective two-phase flow behavior using a multirate rate mass transfer (MRMT) approach. We discuss the range of applicability of the MRMT approach in terms of the pertinent viscous and capillary diffusion time scales. We scrutinize the linearization of capillary diffusion in the immobile regions, which allows for the formulation of MRMT in the form of a non-local single equation model. The global memory function, which encodes mass transfer between the mobile and the immobile regions, is at the center of this method. We propose two methods to estimate the global memory function for a fracture network with given fracture and matrix geometry. Both employ a scaling approach based on the known local memory function for a given immobile region. With the first method, the local memory function is calculated numerically, while the second one employs a parametric memory function in form of truncated power-law. The developed concepts are applied and tested for fracture networks of different complexity. We find that both physically based parameter estimation methods for the global memory function provide predictive MRMT approaches for the description of multiphase flow in highly heterogeneous porous media. © 2016 Elsevier Ltd.
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Format: | artículo biblioteca |
Language: | English |
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Elsevier
2016-05-01
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Subjects: | Dual-porosity, Fracture networks, Memory function, Multi-rate mass-transfer models, Process time scales, Two-phase flow, |
Online Access: | http://hdl.handle.net/10261/140763 http://dx.doi.org/10.13039/501100000781 |
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dig-idaea-es-10261-1407632018-05-18T10:16:18Z Multi-rate mass transfer modeling of two-phase flow in highly heterogeneous fractured and porous media Tecklenburg, Jan Neuweiler, Insa Carrera, Jesús Dentz, Marco European Research Council Dual-porosity Fracture networks Memory function Multi-rate mass-transfer models Process time scales Two-phase flow We study modeling of two-phase flow in highly heterogeneous fractured and porous media. The flow behaviour is strongly influenced by mass transfer between a highly permeable (mobile) fracture domain and less permeable (immobile) matrix blocks. We quantify the effective two-phase flow behavior using a multirate rate mass transfer (MRMT) approach. We discuss the range of applicability of the MRMT approach in terms of the pertinent viscous and capillary diffusion time scales. We scrutinize the linearization of capillary diffusion in the immobile regions, which allows for the formulation of MRMT in the form of a non-local single equation model. The global memory function, which encodes mass transfer between the mobile and the immobile regions, is at the center of this method. We propose two methods to estimate the global memory function for a fracture network with given fracture and matrix geometry. Both employ a scaling approach based on the known local memory function for a given immobile region. With the first method, the local memory function is calculated numerically, while the second one employs a parametric memory function in form of truncated power-law. The developed concepts are applied and tested for fracture networks of different complexity. We find that both physically based parameter estimation methods for the global memory function provide predictive MRMT approaches for the description of multiphase flow in highly heterogeneous porous media. © 2016 Elsevier Ltd. This work was supported by the compute cluster, which is funded by the Leibniz University Hanover, the Lower Saxony Ministry of Science and Culture (MWK) and by the German Research Association (DFG) under the grant NE 34 824 10-1. We gratefully acknowledge the help of Bernd Flemisch from the Uni- versity of Stuttgart with the Dumux model. M.D. acknowledges the funding from the European Research Council through the project MHetScale (Grant agreement no. 617511). Peer reviewed 2016-11-25T10:50:14Z 2016-11-25T10:50:14Z 2016-05-01 artículo http://purl.org/coar/resource_type/c_6501 Advances in Water Resources 91: 63-77 (2016) http://hdl.handle.net/10261/140763 10.1016/j.advwatres.2016.02.010 http://dx.doi.org/10.13039/501100000781 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/617511 Postprint 10.1016/j.advwatres.2016.02.010 Sí open Elsevier |
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Dual-porosity Fracture networks Memory function Multi-rate mass-transfer models Process time scales Two-phase flow Dual-porosity Fracture networks Memory function Multi-rate mass-transfer models Process time scales Two-phase flow |
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Dual-porosity Fracture networks Memory function Multi-rate mass-transfer models Process time scales Two-phase flow Dual-porosity Fracture networks Memory function Multi-rate mass-transfer models Process time scales Two-phase flow Tecklenburg, Jan Neuweiler, Insa Carrera, Jesús Dentz, Marco Multi-rate mass transfer modeling of two-phase flow in highly heterogeneous fractured and porous media |
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We study modeling of two-phase flow in highly heterogeneous fractured and porous media. The flow behaviour is strongly influenced by mass transfer between a highly permeable (mobile) fracture domain and less permeable (immobile) matrix blocks. We quantify the effective two-phase flow behavior using a multirate rate mass transfer (MRMT) approach. We discuss the range of applicability of the MRMT approach in terms of the pertinent viscous and capillary diffusion time scales. We scrutinize the linearization of capillary diffusion in the immobile regions, which allows for the formulation of MRMT in the form of a non-local single equation model. The global memory function, which encodes mass transfer between the mobile and the immobile regions, is at the center of this method. We propose two methods to estimate the global memory function for a fracture network with given fracture and matrix geometry. Both employ a scaling approach based on the known local memory function for a given immobile region. With the first method, the local memory function is calculated numerically, while the second one employs a parametric memory function in form of truncated power-law. The developed concepts are applied and tested for fracture networks of different complexity. We find that both physically based parameter estimation methods for the global memory function provide predictive MRMT approaches for the description of multiphase flow in highly heterogeneous porous media. © 2016 Elsevier Ltd. |
author2 |
European Research Council |
author_facet |
European Research Council Tecklenburg, Jan Neuweiler, Insa Carrera, Jesús Dentz, Marco |
format |
artículo |
topic_facet |
Dual-porosity Fracture networks Memory function Multi-rate mass-transfer models Process time scales Two-phase flow |
author |
Tecklenburg, Jan Neuweiler, Insa Carrera, Jesús Dentz, Marco |
author_sort |
Tecklenburg, Jan |
title |
Multi-rate mass transfer modeling of two-phase flow in highly heterogeneous fractured and porous media |
title_short |
Multi-rate mass transfer modeling of two-phase flow in highly heterogeneous fractured and porous media |
title_full |
Multi-rate mass transfer modeling of two-phase flow in highly heterogeneous fractured and porous media |
title_fullStr |
Multi-rate mass transfer modeling of two-phase flow in highly heterogeneous fractured and porous media |
title_full_unstemmed |
Multi-rate mass transfer modeling of two-phase flow in highly heterogeneous fractured and porous media |
title_sort |
multi-rate mass transfer modeling of two-phase flow in highly heterogeneous fractured and porous media |
publisher |
Elsevier |
publishDate |
2016-05-01 |
url |
http://hdl.handle.net/10261/140763 http://dx.doi.org/10.13039/501100000781 |
work_keys_str_mv |
AT tecklenburgjan multiratemasstransfermodelingoftwophaseflowinhighlyheterogeneousfracturedandporousmedia AT neuweilerinsa multiratemasstransfermodelingoftwophaseflowinhighlyheterogeneousfracturedandporousmedia AT carrerajesus multiratemasstransfermodelingoftwophaseflowinhighlyheterogeneousfracturedandporousmedia AT dentzmarco multiratemasstransfermodelingoftwophaseflowinhighlyheterogeneousfracturedandporousmedia |
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1777669282600058880 |