Nagel / Böttcher / Görke Computational Geotechnics

Storage of Energy Carriers
1. Auflage 2017
ISBN: 978-3-319-56962-8
Verlag: Springer International Publishing
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 78 Seiten, eBook

Reihe: Computational Modeling of Energy Systems

In this book, effective computational methods to facilitate those pivotal simulations using open-source software are introduced and discussed with a special focus on the coupled thermo-mechanical behavior of the rock salt. A cohesive coverage of applying geotechnical modeling to the subsurface storage of hydrogen produced from renewable energy sources is accompanied by specific, reproducible example simulations to provide the reader with direct access to this fascinating and important field. Energy carriers such as natural gas, hydrogen, oil, and even compressed air can be stored in subsurface geological formations such as depleted oil or gas reservoirs, aquifers, and caverns in salt rock. Many challenges have arisen in the design, safety and environmental impact assessment of such systems, not the least of which is that large-scale experimentation is not a feasible option. Therefore, simulation techniques are central to the design and risk assessment of these and similar geotechnical facilities.

Zielgruppe

Research

Autoren/Hrsg.

Nagel, Thomas

Böttcher, Norbert

Görke, Uwe-Jens

Kolditz, Olaf

Inhaltsverzeichnis

1;Preface;6
2;Acknowledgements;8
3;Contents;9
4;About the Authors;10
5;1 Introduction;12
5.1;1.1 Energetic Use of the Subsurface;12
5.2;1.2 Geotechnical Use of Rock Salt;13
5.3;1.3 Gas Storage in Salt Caverns;14
5.4;1.4 Scope and Structure of This Tutorial;16
6;2 Basics of Thermomechanics and Inelasticity;17
6.1;2.1 Governing Equations;17
6.2;2.2 Finite Element Implementation and the Kelvin Mapping;20
6.2.1;The Kelvin Mapping of Tensorial Quantities;20
6.2.2;Finite Element Implementation;22
6.3;2.3 Integration of Inelastic Constitutive Models;23
6.3.1;General Aspects;23
6.3.2;Integration Algorithm;24
6.4;2.4 Thermo-Mechanical Coupling in OGS;26
6.5;2.5 Constitutive Models;27
6.5.1;Thermal Process;27
6.5.2;Mechanical Process;27
6.5.2.1;LUBBY2;28
6.5.2.2;Minkley;29
6.5.3;Coupling;32
7;3 Simulation of Laboratory Tests;33
7.1;3.1 Non-isothermal Triaxial Creep Test;33
7.1.1;Geometry and Boundary Conditions;34
7.1.2;Material Properties;38
7.1.3;Numerical Settings;40
7.1.4;Time Stepping;41
7.1.5;Output;42
7.1.6;Simulation Results;42
7.2;3.2 Triaxial Test with Plasticity;45
7.2.1;Geometry and Boundary Conditions;45
7.2.2;Material Properties;47
7.2.3;Numerics;48
7.2.4;Results;49
8;4 Simulating Gas Storage in Salt Caverns;54
8.1;4.1 Scenario;54
8.2;4.2 General Set-Up;56
8.2.1;Cavern Geometry;56
8.2.2;Initial Conditions;57
8.2.3;Boundary Conditions;57
8.2.4;Source Terms;59
8.2.5;Time Discretisation;61
8.3;4.3 Isothermal Model Set-Up;62
8.3.1;Material Properties;64
8.4;4.4 Non-isothermal Model Set-Up;65
8.4.1;Initial Conditions;65
8.4.2;Boundary Conditions;65
8.4.3;Material Properties;66
8.5;4.5 Comparison of Results;66
9;5 Closing Remarks;72
10;References;73
11;Index;77

Über Autor(innen)

Dr. Thomas Nagel leads the "Computational Energy Systems" research group in the Department of Environmental Informatics at the Helmholtz Centre for Environmental Research (UFZ). The Centre studies the complex interactions between humans and the environment in cultivated and damaged landscapes, especially densely populated urban and industrial areas and natural landscapes. The scientists and researchers who work in the Centre develop concepts and processes to help secure the natural foundations of life for future generations.