Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Hydro-mechanical coupled field system identification - application to water reservoirs
https://orcid.org/0000-0002-1251-7301
In this paper we present an inverse method which is capable of identifying system components in a hydro-mechanically coupled system, i.e. for fluid flow in porous media. As an example we regard water dams that were constructed more than hundred years ago but which are still in use. Over the time ageing processes have changed the condition of these dams. Within the dams fissures might have grown. The proposed method is designed to locate these fissures out of combined mechanical and hydraulic measurements. In a numerical example the fissures or damaged zones are described by a smeared crack model. The task is now to identify simultaneously the spatial distribution of Young’s modulus and the hydraulic permeability due to the fact, that in regions where damages are present, the mechanical stiffness of the system is reduced and the permeability increased. The inversion is shown to be an ill-posed problem. As a consequence regularizing methods have to be applied, where the nonlinear Landweber method (a gradient type method combined with a discrepancy principle) has proven to be an efficient choice.
Hydro-mechanical coupled field system identification - application to water reservoirs
https://orcid.org/0000-0002-1251-7301
In this paper we present an inverse method which is capable of identifying system components in a hydro-mechanically coupled system, i.e. for fluid flow in porous media. As an example we regard water dams that were constructed more than hundred years ago but which are still in use. Over the time ageing processes have changed the condition of these dams. Within the dams fissures might have grown. The proposed method is designed to locate these fissures out of combined mechanical and hydraulic measurements. In a numerical example the fissures or damaged zones are described by a smeared crack model. The task is now to identify simultaneously the spatial distribution of Young’s modulus and the hydraulic permeability due to the fact, that in regions where damages are present, the mechanical stiffness of the system is reduced and the permeability increased. The inversion is shown to be an ill-posed problem. As a consequence regularizing methods have to be applied, where the nonlinear Landweber method (a gradient type method combined with a discrepancy principle) has proven to be an efficient choice.
Hydro-mechanical coupled field system identification - application to water reservoirs
https://orcid.org/0000-0002-1251-7301
In this paper we present an inverse method which is capable of identifying system components in a hydro-mechanically coupled system, i.e. for fluid flow in porous media. As an example we regard water dams that were constructed more than hundred years ago but which are still in use. Over the time ageing processes have changed the condition of these dams. Within the dams fissures might have grown. The proposed method is designed to locate these fissures out of combined mechanical and hydraulic measurements. In a numerical example the fissures or damaged zones are described by a smeared crack model. The task is now to identify simultaneously the spatial distribution of Young’s modulus and the hydraulic permeability due to the fact, that in regions where damages are present, the mechanical stiffness of the system is reduced and the permeability increased. The inversion is shown to be an ill-posed problem. As a consequence regularizing methods have to be applied, where the nonlinear Landweber method (a gradient type method combined with a discrepancy principle) has proven to be an efficient choice.
Hydro-mechanical coupled field system identification - application to water reservoirs
Lahmer, Tom (Autor:in) / Thüringer Universitäts- Und Landesbibliothek Jena (Gastgebende Institution) / Gürlebeck, Klaus (Herausgeber:in) / Könke, Carsten (Herausgeber:in)
2010
Internationales Kolloquium über Anwendungen der Informatik und Mathematik in Architektur und Bauwesen : 07. bis 09.07.2009, Bauhaus-Universität Weimar, vol. 18, 2009
Sonstige
Elektronische Ressource
Englisch
A novel hydro-mechanical coupled analysis for the fractured vuggy carbonate reservoirs
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