Books & Tutorials

Thermo-Hydro-Mechanical-Chemical Processes in Fractured Porous Media: Modelling and Benchmarking – From Benchmarking to Tutoring

Beginner Intermediate Advanced

The book comprises the 3rd  collection of benchmarks and examples for porous and fractured media mechanics. Analysis of thermo-hydro-mechanical-chemical (THMC) processes is essential to a wide area of applications in environmental engineering, such as geological waste deposition, geothermal energy utilization (shallow and deep systems), carbon capture and storage (CCS) as well as water resources management and hydrology. In order to assess the feasibility, safety as well as sustainability of geoenvironmental applications, model-based simulation is the only way to quantify future scenarios. This charges a huge responsibility concerning the reliability of conceptual models and computational tools. Benchmarking is an appropriate methodology to verify the quality and validate the concept of models based on best practices. Moreover, benchmarking and code comparison are ...

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Models of Thermochemical Heat Storage

Beginner

Thermal energy storage is of high strategic relevance for the establishment of a sustainable energy system. The development of next-generation storage systems like thermochemical solutions is accompanied by major scientific and engineering challenges. Due to the complexity of the considered storage systems and the exceptional efforts for the development of storage materials as well as for the implementation of large-scale experiments, modelling and numerical simulation are of outstanding importance for the prediction of the operational behaviour and the optimization of thermochemical heat storage systems. The deployment of the necessary simulation tools is thus one of the key research topics in the area of thermal energy storage systems. This book presents an introduction to the computational modelling of the various coupled ...

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Computational Geotechnics I – Storage of Energy Carriers

Beginner Intermediate Advanced

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 ...

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Computational Hydrology II: Groundwater Quality Modeling

Beginner Intermediate

This book explores the application of the open-source software OpenGeoSys (OGS) for hydrological numerical simulations concerning conservative and reactive transport modeling. It provides general information on the hydrological and groundwater flow modeling of a real case study and step-by-step model set-up with OGS, while also highlighting related components such as the OGS Data Explorer. The material is based on unpublished manuals and the results of a collaborative project between China and Germany (SUSTAIN H2O). Though the book is primarily intended for graduate students and applied scientists who deal with hydrological modeling, it also offers a valuable source of information for professional geoscientists wishing to expand their knowledge of the numerical modeling of hydrological processes including nitrate reactive transport modeling. This book is ...

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Geoenergy Modeling III: Enhanced Geothermal Systems

Intermediate Advanced

This tutorial presents the introduction of the open-source software OpenGeoSys for enhanced geothermal reservoir modeling. There are various commercial software tools available to solve complex scientific questions in geothermics. This book will introduce the user to an open source numerical software code for geothermal modeling which can even be adapted and extended based on the needs of the researcher.  The book explains basic mathematical equations and numerical methods to modeling flow and heat transport in fractured porous rock formations. In order to help readers gain a system-level understanding of the necessary analysis, the authors include two benchmark examples and two case studies of real deep geothermal test-sites located in Germany and France. 

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Geoenergy Modeling II: Shallow Geothermal Systems

Beginner Intermediate

This book is dedicated to the numerical modeling of shallow geothermal systems. The utilization of shallow geothermal energy involves the integration of multiple Borehole Heat Exchangers (BHE) with Ground Source Heat Pump (GSHP) systems to provide heating and cooling. The modeling practices explained in this book can improve the efficiency of these increasingly common systems. The book begins by explaining the basic theory of heat transport processes in man-made as well as natural media. These techniques are then applied to the simulation of borehole heat exchangers and their interaction with the surrounding soil. The numerical and analytical models are verified against analytical solutions and measured data from a Thermal Response Test, and finally, a real test site is analyzed through the model and discussed with regard to BHE and ...

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Geoenergy Modeling I: Geothermal Processes in Fractured Porous Media

Beginner Intermediate

This introduction to geothermal modeling deals with flow and heat transport processes in porous and fractured media related to geothermal energy applications. Following background coverage of geothermal resources and utilization in several countries, the basics of continuum mechanics for heat transport processes, as well as numerical methods for solving underlying governing equations are discussed. This examination forms the theoretical basis for five included step-by-step OpenGeoSys exercises, highlighting the most important computational areas within geothermal resource utilization, including heat diffusion, heat advection in porous and fractured media, and heat convection. The book concludes with an outlook on practical follow-up contributions investigating the numerical simulation of shallow and deep geothermal systems.

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Thermo-Hydro-Mechanical Chemical Processes in Fractured Porous Media: Modelling and Benchmarking / Benchmarking Initiatives

Beginner Intermediate Advanced

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 ...

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Thermo-Hydro-Mechanical-Chemical Processes in Fractured Porous Media: Modelling and Benchmarking

Beginner Intermediate Advanced

The second book in the OpenGeoSys benchmarking series provides guidance to understanding complicated coupled processes based on the experimental data available and implementation of developed algorithms in numerical codes. Results of selected test cases in the fields of closed-form solutions (e.g., deformation processes), single processes (such as groundwater flow) as well as coupled processes are presented. It is part of the OpenGeoSys initiative - an open source project to share knowledge and experience in environmental analysis and scientific computation with the community. The second volume mainly is dedicated to “closed form solutions” developed and provided by Dr. Peter Vogel (BGR). You will find the packed input files for Chapter 2 as an attachment. Inside take a look at the file ...

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Computational Hydrology I: Groundwater Flow Modeling

Beginner

This tutorial on the application of the open-source software OpenGeoSys (OGS) in computational hydrology is based on a one-week HIGRADE-course at the Helmholtz Centre for Environmental Research in Leipzig, Germany. The book contains general information regarding hydrological and groundwater flow modelling and the pre-processing and step-by-step model set-up of a case study with OGS and related components such as the OGS Data Explorer. In addition, it also illustrates the application of pre- and post-processing tools such as ArcGIS or ParaView for the preparation of input data as well as the optimal presentation of simulation results. This OGS tutorial is the result of close cooperation of the Helmholtz Centre for Environmental Research (UFZ) with partner universities (Technische Universität Dresden, Christian-Albrechts University ...

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