Note: Intro -- Contents -- Contributing Authors -- 1 Introduction -- 1.1 Motivation -- 1.2 Application Areas -- 1.3 Scope of This Book -- References -- Part I Closed Form Solutions -- 2 Verification Tests -- 2.1 Heat Conduction -- 2.1.1 A 1D Steady-State Temperature Distribution, Boundary Conditions of 1st Kind -- 2.1.2 A 1D Steady-State Temperature Distribution, Boundary Conditions of 1st and 2nd Kind -- 2.1.3 A 2D Steady-State Temperature Distribution, Boundary Conditions of 1st Kind -- 2.1.4 A 2D Steady-State Temperature Distribution, Boundary Conditions of 1st and 2nd Kind -- 2.1.5 A 3D Steady-State Temperature Distribution -- 2.1.6 A Transient 1D Temperature Distribution, Time-Dependent Boundary Conditions of 1st Kind -- 2.1.7 Transient 1D Temperature Distributions, Time-Dependent Boundary Conditions of 2nd Kind -- 2.1.8 Transient 1D Temperature Distributions, Non-Zero Initial Temperature, Boundary Conditions of 1st and 2nd Kind -- 2.1.9 A Transient 2D Temperature Distribution, Non-Zero Initial Temperature, Boundary Conditions of 1st and 2nd Kind -- 2.2 Liquid Flow -- 2.2.1 A 1D Steady-State Pressure Distribution, Boundary Conditions of 1st Kind -- 2.2.2 A 1D Steady-State Pressure Distribution, Boundary Conditions of 1st and 2nd Kind -- 2.2.3 A 2D Steady-State Pressure Distribution, Boundary Conditions of 1st Kind -- 2.2.4 A 2D Steady-State Pressure Distribution, Boundary Conditions of 1st and 2nd Kind -- 2.2.5 A 3D Steady-State Pressure Distribution -- 2.2.6 A Hydrostatic Pressure Distribution -- 2.2.7 A Transient 1D Pressure Distribution, Time-Dependent Boundary Conditions of 1st Kind -- 2.2.8 Transient 1D Pressure Distributions, Time-Dependent Boundary Conditions of 2nd Kind -- 2.2.9 Transient 1D Pressure Distributions, Non-Zero Initial Pressure, Boundary Conditions of 1st and 2nd Kind. , 2.2.10 A Transient 2D Pressure Distribution, Non-Zero Initial Pressure, Boundary Conditions of 1st and 2nd Kind -- 2.3 Gas Flow -- 2.3.1 A 1D Steady-State Gas Pressure Distribution, Boundary Conditions of 1st Kind -- 2.3.2 A 1D Steady-State Gas Pressure Distribution, Boundary Conditions of 1st and 2nd Kind -- 2.3.3 A 2D Steady-State Gas Pressure Distribution -- 2.3.4 A 3D Steady-State Gas Pressure Distribution -- 2.4 Deformation Processes -- 2.4.1 An Elastic Beam Undergoes Axial Load -- 2.4.2 An Elastic Plate Undergoes Simple Shear -- 2.4.3 An Elastic Cuboid Undergoes Load Due to Gravity -- 2.4.4 Stresses Relax in a Deformed Cube of Norton Material -- 2.4.5 A Cube of Norton Material Creeps Under Constant Stress -- 2.4.6 A Cube of Norton Material Undergoes Tensile Strain Increasing Linearly with Time -- 2.4.7 A Cube of Norton Material Undergoes Compressive Stress Increasing Linearly with Time -- 2.5 Mass Transport -- 2.5.1 Solute Transport Along Permeable Beams, Hydraulic and Solute Boundary Conditions of 1st and 2nd Kind -- 2.5.2 Solute Transport Along Permeable Beams with an Inert, a Decaying, and an Adsorbing Solute, Time-Dependent Boundary Conditions of 1st Kind -- 2.5.3 A Transient 2D Solute Distribution -- 2.6 Hydrothermal Processes -- 2.6.1 A Transient 1D Temperature Distribution in a Moving Liquid -- 2.6.2 A Transient 2D Temperature Distribution in a Moving Liquid -- 2.7 Hydromechanical Coupling -- 2.7.1 A Permeable Elastic Beam Deforms Under Steady-State Internal Liquid Pressure -- 2.7.2 A Permeable Elastic Square Deforms Under Constant Internal Liquid Pressure -- 2.7.3 A Permeable Elastic Cube Deforms Under Constant Internal Liquid Pressure -- 2.7.4 A Permeable Elastic Cuboid Undergoes Static Load Due to Gravity and Hydrostatic Liquid Pressure. , 2.7.5 A Permeable Elastic Beam Deforms Under Transient Internal Liquid Pressure. Specified Boundary Conditions are Time-Dependent and of 1st Kind -- 2.7.6 A Permeable Elastic Beam Deforms Under Transient Internal Liquid Pressure. Specified Boundary Conditions are Time-Dependent and of 1st and 2nd Kind -- 2.7.7 Biot's 1D Consolidation Problem: Squeezing of a Pressurized Column Causes the Liquid to Discharge from the Domain -- 2.8 Thermomechanics -- 2.8.1 An Elastic Beam Deforms Due to an Instant Temperature Change -- 2.8.2 An Elastic Square Deforms Due to an Instant Temperature Change -- 2.8.3 An Elastic Cube Deforms Due to an Instant Temperature Change -- 2.8.4 An Elastic Cuboid Undergoes Load Due to Gravity and Instant Temperature Change -- 2.8.5 An Elastic Beam Deforms Due to a Transient Temperature Change. Temperature Boundary Conditions are Time-Dependent and of 1st Kind -- 2.8.6 Elastic Beams Deform Due to a Transient Temperature Change. Temperature Boundary Conditions are Time-Dependent and of 2nd Kind -- 2.8.7 Stresses Relax in a Cube of Norton Material Undergoing an Instant Temperature Change -- 2.9 Thermo-Hydro-Mechanical Coupling -- 2.9.1 A Permeable Elastic Cuboid Deforms Due to Gravity, Internal Liquid Pressure, and Instant Temperature Change -- 2.9.2 A Permeable Elastic Beam Deforms Due to Cooling Liquid Injection -- References -- Part II Single Processes -- 3 Groundwater Flow---Theis' Revisited -- 3.1 Problem Definition -- 3.2 Theis' 1.5D and 2.5D -- 3.3 Theis' 2D -- 3.4 Theis' 3D -- 3.5 Results -- Reference -- 4 Richards Flow -- 4.1 Comparison with Differential Transform Method (DTM) -- 4.2 Undrained Heating -- 4.2.1 Definition (1D) -- 4.2.2 Heating a Saturated Sample -- 4.2.3 Heating an Unsaturated Sample -- 4.2.4 Results -- References -- 5 Multi-Componential Fluid Flow -- 5.1 Basic Equations -- 5.1.1 Mass Balance Equation. , 5.1.2 Fractional Mass Transport Equation -- 5.1.3 Heat Transport Equation -- 5.1.4 Equation of State -- 5.2 Examples -- 5.2.1 Tracer Test -- 5.2.2 Bottom Hole Pressure -- 5.2.3 Plume Migration -- 5.2.4 CO2 Leakage Through Abondoned Well -- 5.2.5 Thermo-Chemical Energy Storage -- References -- 6 Random Walk Particle Tracking -- 6.1 Particle Tracking in Porous Medium -- 6.1.1 Particle Tracking in Porous Medium: 1D Case Study -- 6.1.2 Particle Tracking in Porous Medium: 2D Case Study -- 6.1.3 Particle Tracking in Porous Medium: 3D Case Study -- 6.2 Particle Tracking in Pore Scale -- 6.2.1 Particle Tracking in Pore Scale: 2D Case Study -- 6.2.2 Particle Tracking in Pore Scale: 3D Case Study -- 6.3 Particle Tracking with Different Flow Processes -- 6.3.1 Forchheimer Term -- 6.3.2 Forchheimer Flow in 1D Porous Medium -- 6.3.3 Groundwater Flow Regimes -- 6.4 Particle Tracking in Fractured Porous Media -- 6.4.1 Uncertainty in Flow, Preferential Flow -- References -- 7 Mechanical Processes -- 7.1 Theory and Implementation -- 7.2 Deformation of a Steel Tubing -- 7.2.1 Analytical Solution---Linear Elasticity -- 7.2.2 Numerical Solution -- 7.3 Deformation of a Thick-Walled, Hollow Sphere -- 7.3.1 Analytical Solution---Linear Elasticity -- 7.3.2 Numerical Solution---Linear Elasticity -- 7.3.3 Analytical Solution---Elastoplasticity -- 7.3.4 Numerical Solution---Elastoplastic Deformation of a Sphere -- 7.4 Deformation of an Artificial Salt Cavern -- 7.4.1 Linear Elastic Material -- 7.4.2 Elastoplastic Material -- References -- Part III Coupled Processes -- 8 Density-Dependent Flow -- 8.1 Haline Setups -- 8.1.1 Development and Degregation of a Freshwater Lens -- 8.2 Thermohaline Setups -- 8.2.1 Stability in Rayleigh Convection -- References -- 9 Multiphase Flow and Transport with OGS-ECLIPSE -- 9.1 Introduction -- 9.2 Test Cases. , 9.2.1 Two-Phase Flow with Two-Phase Transport -- 9.2.2 Gas Phase Partitioning -- References -- 10 Coupled THM Processes -- 10.1 HM/THM Processes in a Faulted Aquifer -- 10.1.1 Definition -- 10.1.2 Initial and Boundary Conditions -- 10.1.3 Material Properties -- 10.1.4 Results -- 10.1.5 Initial Conditions Effects -- 10.1.6 Temperature Effects THM Simulation -- 10.2 Injection Induced Hydromechanical (HM) Processes -- 10.2.1 Definition -- 10.2.2 Solution -- 10.2.3 Model Description -- 10.2.4 Results -- 10.3 AnSichT THM Test Case -- 10.3.1 Definition -- 10.3.2 Results -- 10.4 Consolidation Under Two-Phase Flow Condition: Five Spot Example -- References -- 11 Thermo-Mechanics: Stress-Induced Heating of Elastic Solids -- 11.1 Theory -- 11.2 Problem Definition -- 11.3 Analytical Solution -- 11.4 Numerical Solution -- 11.5 Results -- References -- 12 Reactive Transport -- 12.1 Kinetic Dissolution of Non-aqueous Phase Liquids -- 12.1.1 Hansen and Kueper Benchmark -- 12.2 Kinetic Mineral Dissolution/Precipitation -- 12.2.1 Simulation of a Kinetic Calcite/Dolomite Dissolution Front -- 12.3 Local Thermal Nonequilibrium and Gas--Solid Reactions -- 12.3.1 Introduction -- 12.3.2 Interphase Heat Transfer -- 12.3.3 Interphase Mass Transfer and Heat of Reaction -- 12.3.4 Interphase Friction -- 12.3.5 Steady State Heat Conduction with Heat Generation and Convection Boundary Conditions -- References -- Appendix AIntroduction to OpenGeoSys (OGS):OGS-Overview -- Appendix BOGS-Software Engineering -- Appendix CData Preprocessing and Model Setupwith OGS -- Appendix DGINA-OGS -- Appendix EScientific Visualization and Virtual Reality -- Appendix FOGS High-Performance-Computing.