GeomInt—Discontinuities in Geosystems From Lab to Field Scale

GeomInt—Discontinuities in Geosystems From Lab to Field Scale

Author: Olaf Kolditz

Publisher: Springer Nature

Published: 2023-05-02

Total Pages: 107

ISBN-13: 3031264932

DOWNLOAD EBOOK

This is an open access book. In view of growing conflicts over strategic georesources, the use of the geological subsurface in the sense of a regional resource is becoming increasingly important. In this context, georeservoirs are playing an important role for the energy transition not only as a source of energy but also as a storage facility and deep geological disposal for energy waste. The success of the energy transition also depends to a large extent on the efficient and safe use of underground resources. This book complements the previous basic book (GeomInt—Integrity of Host Rocks) with a series of application examples in different rock formations, clay, salt, and crystalline. The methodology developed in GeomInt is used, among others, in the Mont Terri underground research laboratory (Opalinus Clay), in the large borehole test in Springen (salt rock) and in the “Reiche Zeche” teaching and research mine (crystalline rock). In addition, new methodological developments are also taken up in experiments and models and embedded in workflows for geotechnical system analyses. The present book summarizes the results of the collaborative project “GeomInt2: Geomechanical integrity of host and barrier rocks - experiment, modeling and analysis of discontinuities” within the program: Geo Research for Sustainability (GEO: N) of the Federal Ministry of Education and Research (BMBF).


GeomInt–Mechanical Integrity of Host Rocks

GeomInt–Mechanical Integrity of Host Rocks

Author: Olaf Kolditz

Publisher: Springer Nature

Published: 2021-04-01

Total Pages: 287

ISBN-13: 3030619095

DOWNLOAD EBOOK

This open access book summarizes the results of the collaborative project “GeomInt: Geomechanical integrity of host and barrier rocks - experiment, modeling and analysis of discontinuities” within the Program: Geo Research for Sustainability (GEO: N) of the Federal Ministry of Education and Research (BMBF). The use of geosystems as a source of resources, a storage space, for installing underground municipal or traffic infrastructure has become much more intensive and diverse in recent years. Increasing utilization of the geological environment requires careful analyses of the rock–fluid systems as well as assessments of the feasibility, efficiency and environmental impacts of the technologies under consideration. The establishment of safe, economic and ecological operation of underground geosystems requires a comprehensive understanding of the physical, (geo)chemical and microbiological processes on all relevant time and length scales. This understanding can only be deepened on the basis of intensive laboratory and in-situ experiments in conjunction with reliable studies on the modeling and simulation (numerical experiments) of the corresponding multi-physical/chemical processes. The present work provides a unique handbook for experimentalists, modelers, analysts and even decision makers concerning the characterization of various types of host rocks (salt, clay, crystalline formations) for various geotechnical applications.


The Last Word

The Last Word

Author: Thomas Nagel

Publisher: Oxford University Press

Published: 2001-11-01

Total Pages: 164

ISBN-13: 0199882118

DOWNLOAD EBOOK

If there is such a thing as reason, it has to be universal. Reason must reflect objective principles whose validity is independent of our point of view--principles that anyone with enough intelligence ought to be able to recognize as correct. But this generality of reason is what relativists and subjectivists deny in ever-increasing numbers. And such subjectivism is not just an inconsequential intellectual flourish or badge of theoretical chic. It is exploited to deflect argument and to belittle the pretensions of the arguments of others. The continuing spread of this relativistic way of thinking threatens to make public discourse increasingly difficult and to exacerbate the deep divisions of our society. In The Last Word, Thomas Nagel, one of the most influential philosophers writing in English, presents a sustained defense of reason against the attacks of subjectivism, delivering systematic rebuttals of relativistic claims with respect to language, logic, science, and ethics. He shows that the last word in disputes about the objective validity of any form of thought must lie in some unqualified thoughts about how things are--thoughts that we cannot regard from outside as mere psychological dispositions.


The Variational Approach to Fracture

The Variational Approach to Fracture

Author: Blaise Bourdin

Publisher: Springer Science & Business Media

Published: 2008-04-19

Total Pages: 173

ISBN-13: 1402063954

DOWNLOAD EBOOK

Presenting original results from both theoretical and numerical viewpoints, this text offers a detailed discussion of the variational approach to brittle fracture. This approach views crack growth as the result of a competition between bulk and surface energy, treating crack evolution from its initiation all the way to the failure of a sample. The authors model crack initiation, crack path, and crack extension for arbitrary geometries and loads.


The Feeling of Value

The Feeling of Value

Author: Sharon Rawlette

Publisher: Createspace Independent Publishing Platform

Published: 2016-06-25

Total Pages: 252

ISBN-13: 9781534768017

DOWNLOAD EBOOK

Winner of New York University's Dean's Outstanding Dissertation Award This revolutionary treatise starts from one fundamental premise: that our phenomenal consciousness includes direct experience of value. For too long, ethical theorists have looked for value in external states of affairs or reduced value to a projection of the mind onto these same external states of affairs. The result, unsurprisingly, is widespread antirealism about ethics. In this book, Sharon Hewitt Rawlette turns our metaethical gaze inward and dares us to consider that value, rather than being something "out there," is a quality woven into the very fabric of our conscious experience, in a highly objective way. On this view, our experiences of pleasure and pain, joy and sorrow, ecstasy and despair are not signs of value or disvalue. They are instantiations of value and disvalue. When we feel pleasure, we are feeling intrinsic goodness itself. And it is from such feelings, argues Rawlette, that we derive the basic content of our normative concepts-that we understand what it means for something to be intrinsically good or bad. Rawlette thus defends a version of analytic descriptivism. And argues that this view, unlike previous theories of moral realism, has the resources to explain where our concept of intrinsic value comes from and how we know when it objectively applies, as well as why we sometimes make mistakes in applying it. She defends this view against G. E. Moore's Open Question Argument as well as shows how these basic facts about intrinsic value can ground facts about instrumental value and value "all things considered." Ultimately, her view offers us the possibility of a robust metaphysical and epistemological justification for many of our strongest moral convictions.


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

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

Author: Olaf Kolditz

Publisher: Springer

Published: 2014-11-26

Total Pages: 314

ISBN-13: 3319118943

DOWNLOAD EBOOK

The present book 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.


OpenGeoSys Tutorial

OpenGeoSys Tutorial

Author: Agnes Sachse

Publisher: Springer

Published: 2017-03-07

Total Pages: 82

ISBN-13: 3319528092

DOWNLOAD EBOOK

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 the second in a series that showcases further applications of computational modeling in hydrological science.


Computational Geotechnics

Computational Geotechnics

Author: Thomas Nagel

Publisher: Springer

Published: 2017-04-29

Total Pages: 78

ISBN-13: 3319569627

DOWNLOAD EBOOK

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.


Geotechnical Characterisation and Geoenvironmental Engineering

Geotechnical Characterisation and Geoenvironmental Engineering

Author: V. K. Stalin

Publisher: Springer

Published: 2018-07-13

Total Pages: 308

ISBN-13: 9811308993

DOWNLOAD EBOOK

The book comprises selected proceedings of the 2016 annual conference of the Indian Geotechnical Society. The technical papers presented on the theme “Geotechnical Characterisation and Geoenvironmental Engineering” highlight the modified geotechnical properties of soil admixed industrial waste and also the characteristics of soil with different pore fluid under varying test conditions. The major topics covered are (i) characterisation of soils, rocks and synthesised materials and (ii) geoenvironmental engineering and behaviour of unsaturated soil. This book will prove a valuable reference for researchers and practicing engineers alike.


Models of Thermochemical Heat Storage

Models of Thermochemical Heat Storage

Author: Christoph Lehmann

Publisher: Springer

Published: 2018-01-23

Total Pages: 102

ISBN-13: 3319715232

DOWNLOAD EBOOK

Thermochemical gas-solid reactions, as well as adsorption processes, are currently of significant interest for the design of heat storage systems. This book provides detailed models of these reactions and processes that account for heat and mass transport, chemical and physical reactions, and possible local thermal non-equilibrium. The underlying scientific theory behind the models is explained, laboratory tests are simulated, and methods for high-performance computing are discussed. Applications ranging from seasonal domestic heat storage to diurnally operating systems in concentrating solar power facilities are considered in these models, which are not available through any other sources. Finally, an outlook on future developments highlights emerging technologies.