Note: Intro -- Preface -- Contents -- Contributors -- Dr. Uwe-Jens Görke -- Symbols -- Part I Introduction -- 1 Introduction -- 1.1 Recent Developments in THMC Research -- 1.2 Events -- 1.3 Literature Review -- 1.3.1 General and Review Works -- 1.3.2 Nuclear Waste Management -- 1.3.3 Geological CO2 Storage -- 1.3.4 Geothermal Energy Systems -- 1.3.5 Reservoir Exploitation and Drilling -- 1.3.6 Continuous Workflows -- 1.4 Bibliography -- 1.5 DECOVALEX-2019 -- Part II Single Processes -- 2 H Processes -- 2.1 Toth's Box -- 2.2 Flow Under a Dam -- 2.3 A Gallery of Disposal Wells -- 2.4 A Catchment -- 2.5 A Gallery of Recharge Wells -- 2.6 H Processes in Stochastic Discrete Fracture Networks -- 2.6.1 Problem Definition -- 2.6.2 Input Files -- 2.6.3 Results -- 3 M Processes -- 3.1 A Thick Plate Undergoes Compression -- 3.2 A Thick Plate Undergoes Tension -- 3.3 A Thick Plate Undergoes Compression and Tension -- 3.4 A Thick Plate Undergoes Tension and Shear -- 3.5 A Thick Plate Undergoes Tension and Twist -- 3.6 A Double Fourier Series Representation -- 3.7 A Thick Plate, Bottom Loads -- 3.8 A Cuboid, Top Loads, Bottom Loads -- 3.9 A Cuboid, Bottom Loads -- 3.10 A Cuboid, Top Loads -- 3.11 A Cube Undergoes Uniform Compression, Anisotropy Parallel to X-Axis -- 3.12 A Cuboid Undergoes Load Due to Gravity, Anisotropy Parallel to X-Axis -- 3.13 A Thick Plate Undergoes Lateral Compression, Anisotropy Parallel to Y-Axis -- 3.14 A Thick Plate Deforms Under Its Own Weight, Anisotropy Parallel to Y-Axis -- 3.15 A Thick Plate Undergoes Shear, Anisotropy Parallel to Z-Axis -- 3.16 A Cuboid Deformes Under Its Own Weight, Anisotropy Parallel to Z-Axis -- 3.17 A Viscoelastic (LUBBY2) Material in Simple-Shear Creep -- 3.18 Triaxial Compression of an Elasto-Plastic Material with Hardening Based on Ehlers' Yield Surface -- 3.18.1 Introduction -- 3.18.2 Benchmark. , 3.18.3 Drucker-Prager as a Special Case -- 3.19 Material Forces -- 3.19.1 Benchmark on Material Forces: A Non-uniform Bar in Tension -- 4 T Processes -- 4.1 Effective Thermal Conductivity -- 4.1.1 Introduction and Theory -- 4.1.2 Model Setup -- Part III Coupled Processes -- 5 HH Processes -- 5.1 Coupling OpenGeoSys and HYSTEM-EXTRAN for the Simulation of Pipe Leakage -- 5.1.1 Analytical Solution of Stationary Constant Water Level-Driven Infiltration into a Horizontally Layered Soil Column -- 5.1.2 Physical Experiment of Transient, Constant Water Level-Driven Infiltration into a Homogeneous Soil Column -- 5.1.3 Physical Experiment of Transient, Variable Water Level-Driven Infiltration into a Homogeneous Soil Column -- 5.2 Coupling WEAP and OpenGeoSys for a Decision Support System for Integrated Water Resources Management -- 5.2.1 Background -- 5.2.2 General Concept -- 5.2.3 Software Concept -- 5.2.4 Benchmark Problem -- 5.3 Coupling mHM with OGS for Catchment Scale Hydrological Modeling -- 5.3.1 mHM -- 5.3.2 Structure of the Coupled Model mHM#OGS -- 5.3.3 Model Setup in a Catchment -- 5.3.4 Model Verification -- 6 H2 Processes -- 6.1 Infiltration in Homogeneous Soil -- 6.1.1 Definition -- 6.1.2 Model Configuration -- 6.1.3 Results -- 6.2 Liakopoulos Experiment -- 6.2.1 Definition -- 6.2.2 Model Configuration -- 6.2.3 Results -- 6.3 McWhorter Problem -- 6.3.1 Definition -- 6.3.2 Model Configuration -- 6.3.3 Results -- 7 HT (Convection) Processes -- 7.1 3D Benchmark of Free Thermal Convection in a Faulted System -- 7.1.1 Introduction -- 7.1.2 Problem Formulation HT -- 7.1.3 Numerical Benchmark -- 7.1.4 Results -- 7.1.5 OGS-6 and OGS-5 Computing Time -- 7.1.6 Summary -- 7.2 2D Benchmark of Large-Scale Free Thermal Convection -- 7.2.1 Problem Formulation -- 7.2.2 Numerical Benchmark -- 7.2.3 Results -- 7.2.4 Summary. , 7.3 Two-Dimensional Transient Thermal Advection -- 7.3.1 Transient 2D Heat Transport with Moving Liquid -- 8 HM Processes -- 8.1 Fluid Injection in a Fault Zone Using Interface Elements with Local Enrichment -- 8.1.1 Model Approach -- 8.1.2 Model Set-Up -- 8.1.3 Results -- 9 TM Processes -- 9.1 A Linear Temperature Distribution -- 9.2 A Steady-State Antisymmetric Temperature Distribution -- 9.3 A Transient Antisymmetric Temperature Distribution -- 9.4 A Bilinear Temperature Distribution -- 9.5 A Temperature Distribution Represented by a Quadratic Form -- 9.6 A Temperature Distribution Represented by a Fourier Series -- 9.7 A Phase-Field Model for Brittle Fracturing of Thermo-Elastic Solids -- 9.7.1 The Model -- 9.7.2 Single-edge-notched Isothermal Tensile Test -- 9.7.3 Thermo-Mechanical Tests -- 10 THM Processes -- 10.1 Liquid Flow and Heat Transport in a Permeable Elastic Beam I -- 10.2 Liquid Flow and Heat Transport in a Permeable Elastic Beam II -- 10.3 Liquid Flow and Heat Transport in a Permeable Elastic Beam III -- 10.4 Mass Conservation, Thermal Pressurization and Stress Distribution in Coupled Thermo-Hydro-Mechanical Processes -- 10.4.1 Governing Equations -- 10.4.2 OGS-5 -- 10.4.3 OGS-6 -- 10.5 Thermo-Hydro-Mechanical Freezing Benchmark (CIF Test) -- 10.5.1 Governing Equations -- 10.5.2 Benchmark Description -- 11 RTM Processes -- 11.1 Reactive Mass Transport in a Compacted Granite Fracture with Pressure Solution Acting upon Grain Contacts -- 11.1.1 Theory -- 11.1.2 Example -- 12 THC-Processes -- 12.1 A Benchmark Case for the Simulation of Thermochemical Heat Storage -- 12.1.1 Introduction -- 12.1.2 Implementational Details -- 12.1.3 Benchmark Description -- 12.1.4 Results -- Appendix A OpenGeoSys-6 -- A.1 OGS-6: Development and Challenges -- A.1.1 Introduction -- A.1.2 Overview of Processes -- A.1.3 Implementation of Workflows. , A.1.4 Transition from OGS-5 -- A.1.5 Heterogeneous Computing -- A.2 Software Engineering and Continuous Integration -- A.3 High-Performance-Computing -- A.3.1 Why is High-Performance-Computing Necessary? -- A.3.2 Parallelization Approaches -- A.3.3 Results -- A.3.3.1 Description of the Benchmark Example -- A.3.3.2 Run Times and Speedup for IO, Assembly and Linear Solver -- A.4 Data Integration and Visualisation -- Appendix B GINA_OGS: A Tutorial of a Geotechnical Application -- Appendix C OGS: Input Files -- References.