Particulate discrete element analysis is becoming increasingly popular for research in geomechanics as well as geology, chemical engineering, powder technology, petroleum engineering and in studying the physics of granular materials. With increased computing power, practising engineers are also becoming more interested in using this technology for analysis in industrial applications. This is the first single work on Discrete Element Modelling (DEM) providing the information to get started with this powerful numerical modelling approach. Written by an independent author with experience both in developing DEM codes and using commercial codes, this book provides the basic details of the numerical method and the approaches used to interpret the results of DEM simulations. Providing a basic overview of the numerical method, Particulate Discrete Element Modelling discusses issues related to time integration and numerical stability, particle types, contact modelling and boundary conditions. It summarizes approaches to interpret DEM data so that users can maximize their insight into the material response using DEM. The aim of this book is to provide both users and prospective users of DEM with a concise reference book that includes tips to optimize their usage. Particulate Discrete Element Modelling is suitable both for first time DEM analysts as well as more experienced users. It will be of use to professionals, researchers and higher level students, as it presents a theoretical overview of DEM as well as practical guidance on running DEM simulations and interpreting DEM simulation data.
Applied Geotechnics series
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The continuous growth in the demand for water supply and sanitation services has posed decision makers with the challenge to discover new, and to adapt existing, institutions. Since the last two decades, the most prominent institutional change for the water and sanitation sector is neo-liberalism. Neo-liberalism manifests itself in the water sector through privatization, private sector involvement and liberalisation. This book analyses whether neo-liberalism has had an effect on the institutions, the strategies, and the performances of water providers. Strategies are interpreted through what a water provider can do (strategic context), wants to do (strategic plans), and actually does (strategic actions). On the basis of studies in the Netherlands, the Netherlands Antilles, the United Kingdom and Italy, the book concludes that neo-liberal institutional changes matter for the strategies of water providers. However, it also finds that the inherent problems with performance interpretation, measurement and comparison obscure any accurate insight in the effect of neo-liberal institutional changes on performance. In this regard the book opens a window for research both on the relation between institutions and conduct, and between conduct and performance of water and sanitation providers.
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password (given below) is needed to unzip the mirror links.
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STATISTICS IN PRACTICE A practical exploration of alternative approaches to analyzing water-related environmental issuesWritten by an experienced environmentalist and recognized expert in the field, this text is designed to help water resource managers and scientists to formulate, implement, and interpret more effective methods of water quality management.After presenting the basic foundation for using statistical methods in water resource management, including the use of appropriate hypothesis test procedures and some rapid calculation procedures, the author offers a range of practical problems and solutions on environmental topics that often arise, but are not generally covered.
These include:
* Formulating water quality standards
* Determining compliance with standards
* MPNs and microbiology
* Water-related, human health risk modeling
* Trends, impacts, concordance, and detection limits
In order to promote awareness of alternative approaches to analyzing data, both frequentist and Bayesian, statistical methods are contrasted in terms of their applicability to various environmental issues.
Each chapter ends with a number of set problems for which full answers are provided. The book also encourages discussion between technical staff and management before embarking on statistical studies.
Contents
List of Figures
List of Tables
Preface
Part I Issues
1 Introduction
2 Basic concepts of probability and statistics
3 Intervals
4 Hypothesis testing
5 Detection
6 Mathematics and calculation methods
Part II Problems and Solutions
7 Formulating water quality standards
8 Percentile standards (and the Reverend Bayes)
9 Microbial water quality and human health
10 MPNs and microbiology
11 Trends, impacts, concordance, detection limits
12 Answers to exercises
References
Author Index
Topic Index
Appendix A Statistical Tables
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IABSE Symposium Budapest 2006
Responding to Tomorrow’s Challenges
in Structural Engineering
IABSE REPORT, Volume 92
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Numerical Grid Generation: Foundations and Applications
Author: Joe F. Thompson, Z.U.A. Warsi, C. Wayne Mastin | Size: 2.37 MB | Format:pdf | Quality:Original | Publisher: Elsevier Science Ltd | Year: May 1985 | pages: 335 | ISBN: 044400985X, ISBN-13: 978-0444009852
In this text, grid generation and the use thereof in numerical solutions of partial equations are both discussed.
Table of Contents:
Preface
I. Introduction
II. Boundary-Conforming Coordinate Systems
III. Transformation Relations
IV. Numerical Implementation
V. Truncation Error
VI. Elliptic Generation Systems
VII. Parabolic and Hyperbolic Generation Systems
VIII. Algebraic Generation Systems
IX. Orthogonal Systems
X. Conformal Mapping
XI. Adaptive Grids
Appendix A
Appendix B
Appendix C
References The entire text of this book is available online and also as downloadable pdf version!
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Mathematical Analysis for Modeling provides you with better comprehension of how mathematics is developed for, and applies to, solving scientific and engineering problems. The author stresses developing mathematical descriptions of scientific and engineering situations, rather than rote memorization of proofs and formulas. Emphasis is placed on algorithms as solutions to problems, and on insight rather than on formal derivations. This book is for those who intend to conduct research in areas of science requiring the use and understanding of a substantial amount of mathematics, but who may not be well-versed in such applications.
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Author: Joe F. Thompson, Bharat K. Soni, Nigel P. Weatherill (Editors) | Size: 27.17 MB | Format:DjVu | Quality:Unspecified | Publisher: CRC-Press | Year: September 30, 1998 | pages: 1096 | ISBN: 0849326877, ISBN-13: 978-0849326875
Handbook of Grid Generation addresses the use of grids (meshes) in the numerical solutions of partial differential equations by finite elements, finite volume, finite differences, and boundary elements. Four parts divide the chapters: structured grids, unstructured girds, surface definition, and adaption/quality. An introduction to each section provides a roadmap through the material.
This handbook covers:
- Fundamental concepts and approaches
- Grid generation process
- Essential mathematical elements from tensor analysis and differential geometry, particularly relevant to curves and surfaces
- Cells of any shape - Cartesian, structured curvilinear coordinates, unstructured tetrahedra, unstructured hexahedra, or various combinations
- Separate grids overlaid on one another, communicating data through interpolation
- Moving boundaries and internal interfaces in the field
- Resolving gradients and controlling solution error
- Grid generation codes, both commercial and freeware, as well as representative and illustrative grid configurations. Handbook of Grid Generation contains 37 chapters as well as contributions from more than 100 experts from around the world, comprehensively evaluating this expanding field and providing a fundamental orientation for practitioners.
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National Geographic - Can It Be Built S01E01 Circular Skyscraper (2010)
Size: 350 MB | Quality:HD-720 | Year:2010 | Format:avi | Video Codec:Xvid | Language: English
Abu Dhabi is famous for its extreme engineering, but now one project could surpass them all - the world's most inclined skyscraper, Capital Gate. Capital Gate is a tower that spirals out of the ground at 525 feet and tilts almost five times more than the Leaning Tower of Pisa. The tower will include a five-star hotel on the top 18 levels, an infinity pool, a restaurant hanging 300 feet above the ground and a helicopter pad on the roof.
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Size: 350 MB | Quality:DVDRip | Video Codec:Xvid | Language: English
The record-setting Matyiko Brothers race against time to transport a 900-ton building to a new location. The Matyiko brothers are a legendary MEGA MOVER family. Their company–Expert House Movers–entered the record books when they moved the historic Gem Theater in Detroit, the Schubert Theater in Minneapolis, and the Cape Hatteras Lighthouse.
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An introduction to the Flux Core Arc Welding process, covering both self shielded and gas shielded flux cored welding wires. This video focuses on fundamental welder skills. Extremely close-up video of actual welds, with detailed explanations, demonstrate how the voltage and wire speed settings, electrode extension, gun angle, and travel speed affect penetration, the shape, and the size of the weld. Also included are weld joints, metal preparation, and joint fit-up.
Flux Core Arc Welding also provides a working knowledge of constant voltage power sources, wire feed units, and the unique characteristics of flux cored welding wires. Understanding the technical aspects of FCAW is an important part of setting up the equipment to provide the correct amount of weld, with good penetration and weld fusion.
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