Hydro-mechanical models for fractured porous media and their parallel solution contribution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F24%3A00603680" target="_blank" >RIV/68145535:_____/24:00603680 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.ejp-eurad.eu/publications/eurad-d45-technical-report-describing-numerical-method-improvement-and-their" target="_blank" >https://www.ejp-eurad.eu/publications/eurad-d45-technical-report-describing-numerical-method-improvement-and-their</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Hydro-mechanical models for fractured porous media and their parallel solution contribution

Popis výsledku v původním jazyce

This report describes selected results achieved by teams from the Technical University of Liberec and Institute of Geonics of the Czech Academy of Sciences within Task 2 of WP 12 DONUT. We present mainly the results focused on modelling, numerical solution and implementation of coupled hydro-mechanical processes in fractured granite-type rocks related to deep geological repositories. Innparticular, the so-called discrete fracture-matrix approach is used and enriched by selected nonlinear effects on fractures. Within numerical solution of related problems, our results are based on stochastic generation of the fracture network, the mixed finite element method, domain decomposition techniques, splitting procedures and state-of-the-art iterative solvers for linear and nonlinear systems. Open-source in-house libraries are developed and combined to solve the problems. A benchmark in 3D including a borehole excavation in fractured rocks is suggested in accordance with in-situ experiments known from literature and used for illustration of the solution concept. Other achievements of the teams within Task 2 are briefly summarized.

Název v anglickém jazyce

Hydro-mechanical models for fractured porous media and their parallel solution contribution

Popis výsledku anglicky

This report describes selected results achieved by teams from the Technical University of Liberec and Institute of Geonics of the Czech Academy of Sciences within Task 2 of WP 12 DONUT. We present mainly the results focused on modelling, numerical solution and implementation of coupled hydro-mechanical processes in fractured granite-type rocks related to deep geological repositories. Innparticular, the so-called discrete fracture-matrix approach is used and enriched by selected nonlinear effects on fractures. Within numerical solution of related problems, our results are based on stochastic generation of the fracture network, the mixed finite element method, domain decomposition techniques, splitting procedures and state-of-the-art iterative solvers for linear and nonlinear systems. Open-source in-house libraries are developed and combined to solve the problems. A benchmark in 3D including a borehole excavation in fractured rocks is suggested in accordance with in-situ experiments known from literature and used for illustration of the solution concept. Other achievements of the teams within Task 2 are briefly summarized.

Druh

V_souhrn - Souhrnná výzkumná zpráva

CEP obor

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OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Počet stran výsledku

19

Místo vydání

EU

Název nakladatele resp. objednatele

EU

Verze

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