This open access book addresses the increasing importance of geological subsurface resources in light of conflicts over strategic georesources and their role in the energy transition. It builds on the previous work "GeomInt" by presenting application examples and new methodologies for analyzing geomechanical integrity in various rock formations.
The book comprises an assembly of benchmarks and examples for porous media mechanics collected over the last twenty years. Analysis of thermo-hydro-mechanical-chemical (THMC) processes is essential to many applications in environmental engineering, such as geological waste deposition, geothermal energy utilisation, carbon capture and storage, water resources management, hydrology, even climate chance. In order to assess the feasibility as well as the safety of geotechnical applications, process-based modelling is the only tool to put numbers, i. e. to quantify future scenarios. This charges a huge responsibility concerning the reliability of computational tools. Benchmarking is an appropriate methodology to verify the quality of modelling tools based on best practices. Moreover, benchmarking and code comparison foster community efforts. The benchmark book is part of the OpenGeoSys initiative - an open source project to share knowledge and experience in environmental analysis and scientific computation.
Benchmarking Initiatives
This book presents a new suite of benchmarks for and examples of porous media mechanics collected over the last two years. It continues the assembly of benchmarks and examples for porous media mechanics published in 2014. The book covers various applications in the geosciences, geotechnics, geothermal energy, and geological waste deposition. The analysis of thermo-hydro-mechanical-chemical (THMC) processes is essential to many applications in environmental engineering, such as geological waste deposition, geothermal energy utilisation, carbon capture and storage, water resources management, hydrology, and even climate change. In order to assess the feasibility and safety of geotechnical applications, process-based modelling is the only tool that can effectively quantify future scenarios, a fact which also creates a huge burden of responsibility concerning the reliability of computational tools. The book shows that benchmarking offers a suitable methodology for verifying the quality of modelling tools based on best practices, and together with code comparison fosters community efforts. It also provides a brief introduction to the DECOVALEX, SeSBench and MOMAS initiatives. This benchmark book is part of the OpenGeoSys initiative – an open source project designed to share knowledge and experience in environmental analysis and scientific computation.
Benchmarks and Examples
The book comprises an assembly of benchmarks and examples for porous media mechanics collected over the last twenty years. Analysis of thermo-hydro-mechanical-chemical (THMC) processes is essential to many applications in environmental engineering, such as geological waste deposition, geothermal energy utilisation, carbon capture and storage, water resources management, hydrology, even climate chance. In order to assess the feasibility as well as the safety of geotechnical applications, process-based modelling is the only tool to put numbers, i. e. to quantify future scenarios. This charges a huge responsibility concerning the reliability of computational tools. Benchmarking is an appropriate methodology to verify the quality of modelling tools based on best practices. Moreover, benchmarking and code comparison foster community efforts. The benchmark book is part of the OpenGeoSys initiative - an open source project to share knowledge and experience in environmental analysis and scientific computation.
Fluids, play an important role in environmental systems, appearing as surface water in rivers, lakes, and coastal regions or in the subsurface as well as in the atmosphere. Mechanics of environmental fluids is concerned with fluid motion, associated mass and heat transport in addition to deformation processes in subsurface systems. In this textbook the fundamental modelling approaches based on continuum mechanics for fluids in the environment are described, including porous media and turbulence. Numerical methods for solving the process governing equations and its object-oriented computer implementation are discussed and illustrated with examples. Finally the application of computer models in civil and environmental engineering is demonstrated.
Band 2: Strömungs- und Transportmodellierung
Der Band bietet eine umfassende Sammlung innovativer geowissenschaftlicher Methoden zur Untersuchung von Deponien und Altlasten. Durch die sieben Einzelbände wird eine detaillierte Anleitung zur Erkundung des Untergrundes bereitgestellt, die Fachleuten in diesem Bereich wertvolle Werkzeuge an die Hand gibt. Die einzigartige Zusammenstellung ermöglicht eine effektive Analyse und Bewertung von Altlasten und trägt zur Verbesserung von Sanierungsstrategien bei.
Der Hydrologe oder Bauingenieur findet zahlreiche Fach- und Lehrbücher zur Geohydraulik und Migrationstheorie poröser Medien. Als Ergänzung dazu präsentiert Olaf Kolditz moderne und detaillierte mathematische Modellierungen von Strömung, Stoff- und Wärmetransportvorgängen im Kluftgestein. Die Ausbreitung in Kluftgrundwasserleitern und die Behinderung von Migrationsprozessen sind für Wasserwesen, Bauingenieurwesen und Geophysik von großer Bedeutung. Geringleitende Gesteine bilden effektive geologische Barrieren zur Isolierung von Schadstoffen, während gute Wegsamkeiten in Grundwasserleitern für die Wasserwirtschaft wichtig sind. Klüfte können bevorzugte Wasserwege und schnelle Transportwege im Untergrund schaffen und die hydraulischen Eigenschaften von Gesteinen beeinflussen. Auch Sedimentgesteine und Mikrokluftsysteme müssen bei der Modellierung berücksichtigt werden. Geeignete Strukturmodelle, wie klüftige und klüftig-poröse Medien, sind entscheidend, da der Prozessablauf stark von der Struktur des Mediums abhängt. Die Simulation dieser Prozesse erfordert spezielle Erkundungstechniken und stellt hohe Anforderungen an die modelltechnische Umsetzung. Das Buch erläutert geeignete Modellkonzepte wie diskrete Kluft-Modelle, Hybrid-Modelle und Mehrkontinua-Modelle und diskutiert deren Möglichkeiten und Grenzen. Es richtet sich an Bauingenieure, Hydrologen, Geowissenschaftler sowie Mathematiker und Physiker, die hydrogeologische, ge