Conservation laws arise from the modeling of physical processes through the following three steps: 1) The appropriate physical balance laws are derived for m-phy- t cal quantities, ul""' with u = (ul' ..., u ) and u(x, t) defined m for x = (xl""' ) E RN (N = 1,2, or 3), t > 0 and with the values m u(x, t) lying in an open subset, G, of R, the state space. The state space G arises because physical quantities such as the density or total energy should always be positive; thus the values of u are often con strained to an open set G. 2) The flux functions appearing in these balance laws are idealized through prescribed nonlinear functions, F.(u), mapping G into J j = 1, .., N while source terms are defined by S(u, x, t) with S a given smooth function of these arguments with values in Rm. In parti- lar, the detailed microscopic effects of diffusion and dissipation are ignored. 3) A generalized version of the principle of virtual work is applied (see Antman 1]). The formal result of applying the three steps (1)-(3) is that the m physical quantities u define a weak solution of an m x m system of conservation laws, o I + N(Wt'u + r W .F.(u) + W.S(u, x, t))dxdt (1.1) R xR j=l Xj J for all W E C (RN x R+), W(x, t) E Rm."

This book has been documented with the aim to include those fundamentals of 'Hydraulic Machines' which are necessary at graduate level engineering courses of any University. Basic hydraulics is extensively used in various applications in industry, construction, mining and marine engineering. The subject is part of graduate level engineering courses in mechanical, civil, mining, and marine engineering studies worldwide. Most of the literature, however, is either written with a commercial objective to promote the sale of the manufacturers or is theoretically too advanced for comprehension by graduate level engineering students. The rapid advancement in design, miniaturization, metallurgy, and hydraulic fluid characteristics has stimulated the demand for an elementary book, explaining fundamentals. Readers are supposed to be familiar with the elementary fluid mechanics, and basics of gears, piston, crank, and different levers. This book includes those fundamentals of fluid transmission of power that are necessary in graduate mechanical engineering, civil engineering, mining engineering, and marine engineering courses of any university.

Focused Psychotherapy Offers practitioners an approach to psychotherapeutic treatment that is both financially viable and has sufficient clinical depth to assure genuine psychological growth. Providing a strikingly clear description of this approach, this volume enables psychotherapists to quickly hone in on the client's true agenda, therefore avoiding unnecessarily long and drawn out therapeutic work.

A Users Guide to Hydraulic Modelling and Experimentation provides a systematic, comprehensive summary of the progress made through HYDRALAB III . The book combines the expertise of many of the leading hydraulic experimentalists in Europe and identifies current best practice for carrying out state-of-the-art, modern laboratory investigations. In addition it gives an inventory and reviews recent advances in instrumentation and equipment that drive present and new developments in the subject. The Guide concentrates on four core areas ? waves, breakwaters, sediments and the relatively-new (but rapidly-developing) cross-disciplinary area of hydrodynamics/ecology. Progress made through the ?CoMIBBS? component of HYDRALAB III provides the material for a chapter focussed on guidance, principles and practice for composite modelling. There is detailed consideration of scaling and the degree of relevance of laboratory/physical modelling approaches for specific contexts included in each of the individual chapters. The Guide includes outputs from the workshops and several of the innovative transnational access projects that have been supported within HYDRALAB III, as well as the focussed joint research activities SANDS and CoMIBBS. Its primary purpose is to serve as a shared resource to disseminate the outstanding advances achieved within HYDRALAB III but, even more than this, it is a tribute to the human and institutional collaborations that led to and sustained the research advances, the human relationships that were strengthened and initiated through joint participation in the Programme, and the training opportunities that participation provided to the many young researchers engaged in the projects.

This textbook is a practical guide to real-time streamflow forecasting that provides a rigorous description of a coupled stochastic and physically based flow routing method and its practical applications. This method is used in current times of record-breaking floods to forecast flood levels by various hydrological forecasting services. By knowing in advance when, where, and at what level a river will crest, appropriate protection works can be organized, reducing casualties and property damage. Through its real-life case examples and problem listings, the book teaches hydrology and civil engineering students and water-resources practitioners the physical forecasting model and allows them to apply it directly in real-life problems of streamflow simulation and forecasting. Designed as a textbook for courses on hydroinformatics and water management, it includes exercises and a CD-ROM with MATLAB(r) codes for the simulation of streamflows and the creation of real-time hydrological forecasts.

Provides key updates to a must-have text on hydraulic control systems This fully updated, second edition offers students and professionals a reliable and comprehensive guide to the hows and whys of today's hydraulic control system fundamentals. Complete with insightful industry examples, it features the latest coverage of modeling and control systems with a widely accepted approach to systems design. The book also offers all new information on: advanced control topics; auxiliary components (reservoirs, accumulators, coolers, filters); hybrid transmissions; multi-circuit systems; and digital hydraulics. Chapters in Hydraulic Control Systems, 2nd Edition cover; fluid properties; fluid mechanics; dynamic systems and control; hydraulic valves, pumps, and actuators; auxiliary components; and both valve and pump controlled hydraulic systems. The book presents illustrative case studies throughout that highlight important topics and demonstrate how equations can be implemented and used in the real world. It also features end-of-chapter exercises to help facilitate learning. It is a powerful tool for developing a solid understanding of hydraulic control systems that will serve all practicing engineers in the field. Provides a useful review of fluid mechanics and system dynamics Offers thorough analysis of transient fluid flow forces within valves Adds all new information on: advanced control topics; auxiliary components; hybrid transmissions; multi-circuit systems; and digital hydraulics Discusses flow ripple for both gear pumps and axial piston pumps Presents updated analysis of the pump control problems associated with swash plate type machines Showcases a successful methodology for hydraulic system design Features reduced-order models and PID controllers showing control objectives of position, velocity, and effort Hydraulic Control Systems, 2nd Edition is an important book for undergraduate and first-year graduate students taking courses in fluid power. It is also an excellent resource for practicing engineers in the field of fluid power.

The Second Edition of the Practical Hydraulics Handbook is a must for all those who work with water utility systems. Presented in workbook format and emphasizing practical applications, this Handbook is perfect for hydraulic engineers, technicians, operating personnel, supervisors, managers, consultants, and students.
The exceptionally well-organized chapters include information on pressurized systems and open channel flow, principles of energy and force, flow calculations and measurement, pumps, and pumping applications.
This latest edition of the Practical Hydraulics Handbook includes new exercises at the end of each chapter and detailed solutions to selected exercises. The well-chosen exercises allow readers to practice applications of the theory and to test their knowledge of the material. The solutions provide guidance and problem-solving techniques that can be used both in the field and in the lab. Reference tables are also provided for calculations of friction loss, velocity, pipe fullness, well drawdown, English/metric conversions, power, and metered flow. These tables make calculations easier and minimize the chance for error.
In this new edition of Practical Hydraulics Handbook, all of the major principles and calculations dealing with the hydraulics of water systems are covered, and new and expanded material has been added.

Fluvial Hydraulics provides a sound qualitative and quantitative understanding of water and sediment flows in natural rivers. This understanding is essential for modeling and predicting hydrologic and geomorphologic processes, erosion, sediment transport, water supply and quality, habitat management, and flood hazards. This book's coverage bridges the gap between the highly quantitative mechanics-based civil-engineering approach to stream hydraulics and the more qualitative treatments of fluvial geomorphology typical of earth-sciences and natural-resources curricula. Measurements of natural river flows illustrate many central concepts.
The book is specifically designed for upper-level students and practitioners who are interested in a fundamental understanding of river behavior. An introduction to the history of fluvial hydraulics and an overview of the morphology and hydrology of rivers provides the context for the rest of the text. A thorough understanding of water properties, including turbulence, is developed via a series of simple thought experiments. The bases of the equations that are used to describe and predict river flows are systematically presented, including dimensional analysis. Subsequent chapters build logically on these foundations, covering velocity distributions, new insights to the central topic of flow resistance, the magnitudes of forces in natural river flows, the principles of conservation of energy and momentum, the prediction of water-surface profiles, the principles of flow measurement, mechanics, and geomorphic aspects of sediment transport. The book will be especially valuable in providing a scientific basis for the growing field of river restoration.
An appendix reviews dimenstions, units, and numerical precision. Over 250 references are cited, providing an entree to the extensive multi-disciplinary literature on rivers. The book's website provides suggestions for student exercises and makes available extensive data bases of measured streamflows for student exploration.

This textbook surveys hydraulics and fluid power systems technology, with new chapters on system modeling and hydraulic systems controls now included.The text presents topics in a systematic way, following the course of energy transmission in hydraulic power generation, distribution, deployment, modeling, and control in fluid power systems.

Maintaining and enhancing the high standards and excellent features that made the previous editions so popular, this book presents engineering and application information to incorporate, control, predict, and measure the performance of all fluid power components in hydraulic or pneumatic systems. Detailing developments in the ongoing "electronic revolution" of fluid power control, the third edition offers new and enlarged coverage of microprocessor control, "smart" actuators, virtual displays, position sensors, computer-aided design, performance testing, noise reduction, on-screen simulation of complex branch-flow networks, important engineering terms and conversion units, and more.

As industrial processes become more and more automated, Air Logic Control (ALC) becomes increasingly important. As the use of ALC becomes more widespread, the need for designers, engineers, and technicians with a working knowledge of ALC technology grows significantly. Air Logic Control for Automated Systems provides the means for anyone involved with control systems to acquire the knowledge and skills they need to implement and maintain ALC for automated manufacturing.
The author focuses on the two types of ALC most often encountered: fluidics and Moving Parts Logic (MPL). He provides a thorough background on the subject, including the properties of compressible fluids, the fundamentals of pneumatics, and the fundamentals of logic systems, then delves into both moving parts and non-moving parts concepts and components. He discusses signal transmission, communications, electrical and electronic devices, plus the symbology, schematics, and flow diagrams related to ALC, and offers a complete overview of ALC system design. With this background established, the author presents three case studies of increasing complexity: a press control system, a parts sorting system, and a bottle filling system. These studies each offer a different approach to problem-solving and together they illustrate the alternative methods available in practice.
Air Logic Control for Automated Systems thus offers technicians, engineers, and designers the foundation for understanding ALC. Armed with this knowledge, they are equipped to handle any number of implementation, programming, maintenance, and troubleshooting tasks with confidence.

An update of a classic textbook covering a core subject taught on most civil engineering courses. Civil Engineering Hydraulics, 6th edition contains substantial worked example sections with an online solutions manual. This classic text provides a succinct introduction to the theory of civil engineering hydraulics, together with a large number of worked examples and exercise problems. Each chapter contains theory sections and worked examples, followed by a list of recommended reading and references. There are further problems as a useful resource for students to tackle, and exercises to enable students to assess their understanding. The numerical answers to these are at the back of the book, and solutions are available to download from the book's companion website.

How much water does the world need to support growing human populations? What are the potential effects of climate change on the world's water resources? These questions and more are discussed in this thoroughly updated and expanded new edition. Written at the undergraduate level, this accessible textbook covers the fundamentals of water resources, water law, allocation, quality and quantity, health issues, and provides examples of potential personal actions and solutions. There is a keener focus on climate change, as many of the predictions made in the first edition have now come to pass. This new edition features improved artwork, more active learning prompts, more positive examples of beneficial changes, basic introductions to scientific approaches and a discussion of emerging contaminants and LiDAR technology. It contains strong teaching features, with new 'In Depth' and 'Think About It' sections to encourage class discussion, and homework questions to test students' understanding.

1 Introduction.- 2 Equations of motion.- 2.1 incompressible flow.- 2.2 the Boussinesq approximation.- 2.3 coordinate system.- 3 Stability and Transition.- 3.1 stability analysis.- 3.2 Kelvin-Helmholtz instability.- 3.3 Rayleigh stability criterion.- 3.4 stability of a one-dimensional flow.- 3.5 routes to chaos.- 4 The characteristics of turbulence.- 4.1 the Burgers equation.- 4.2 phenomenology.- 4.3 experimental and numerical methods.- 5 Statistical description of turbulence.- 5.1 statistics.- 5.2 stationarity and homogeneity.- 5.3 the Reynolds equations.- 5.4 kinetic theory of momentum transfer.- 6 Turbulent flows.- 6.1 channel flow.- 6.2 mean velocity profile.- 6.3 scaling of turbulent wall flows.- 6.4 wall roughness.- 6.5 pressure gradient.- 6.6 free turbulent flows.- 6.7 the free jet.- 7 Kinetic energy.- 7.1 kinetic energy of the mean flow.- 7.2 kinetic energy of turbulence.- 7.3 Prandtl's one-equation model.- 7.4 energy equation per component.- 7.5 convective turbulence.- 7.6 the convective boundary layer.- 8 Vorticity.- 8.1 vorticity equation.- 8.2 coherent structures.- 8.3 enstrophy.- 8.4 the k- (e- ) model.- 8.5 second-order closure and algebraic stress models.- 8.6 large eddy simulation of turbulence.- 9 Correlation function and spectrum.- 9.1 time correlations.- 9.2 the spectrum.- 9.3 spatial correlations and spectra.- 9.4 the Taylor hypothesis.- 9.5 scaling of turbulence spectra.- 9.6 isotropic turbulence.- 10 Turbulent diffusion.- 10.1 statistical approach.- 10.2 the diffusion equation.- 10.3 inertial transport.- A Equations of motion.- B Special topics.- B.1 Monin-Obukhov similarity.- B.2 rapid distortion theory.- B.3 aeroacoustics.- B.4 rotating turbulence (by Herman Clercx).- B.5 drag reduction by polymer additives.- Bibliography.- Index.

This book addresses current and emerging challenges facing those working in offshore construction, design and research. Keynote papers from leading industry practitioners and academics provide a comprehensive overview of central topics covering deepwater anchoring, pipelines, foundation solutions for offshore wind turbines, site investigation, geohazards and emerging Australian frontiers. A further 125 peer reviewed papers introduce and analyse the critical challenges of offshore geotechnical engineering in the areas of the keynote subjects as well as piling, caissons and shallow foundation systems. The papers collected in these proceedings report a variety of numerical and theoretical investigations, experimental programs and field experience, with established design methods discussed alongside state-of-the-art practices.

Water Chemistry provides students with the tools needed to understand the processes that control the chemical species present in waters of both natural and engineered systems. After providing basic information about water and its chemical composition in environmental systems, the text covers theoretical concepts key to solving water chemistry problems. Water Chemistry emphasizes that both equilibrium and kinetic processes are important in aquatic systems. The content focuses not only on inorganic constituents but also on natural and anthropogenic organic chemicals in water. This new edition of Water Chemistry also features updated discussions of photochemistry, chlorine and disinfectants, geochemical controls on chemical composition, trace metals, nutrients, and oxygen. Quantitative equilibrium and kinetic problems related to acid-base chemistry, complexation, solubility, oxidation/reduction reactions, sorption, and the fate and reactions of organic chemicals are solved using mathematical, graphical, and computational tools. Examples show the application of theory and demonstrate how to solve problems using algebraic, graphical, and up-to-date computer-based techniques. Additional web material provides advanced content.

The design of hydraulic machinery in general, and of centrifugal pumps in particular has been and still is essentially empirical. It has been the author's desire at the conclusion of his professional activity to leave behind a document describing at least part of the experience gained over the years in pump design and to offer firm design guidelines to aid the younger designers entering the field of hydraulic design. It is the author's firm conviction that a great deal of improvements can be introduced in the field of hydraulic design. The author hopes that the book shows the direction in which the efforts should be extended to convert what has to date been an art rather than a science into a modern and exciting field of activity.

This textbook describes in detail the fundamental equations that govern the fate and transport of contaminants in the environment, and covers the application of these equations to engineering design and environmental impact analysis relating to contaminant discharges into rivers, lakes, wetlands, groundwater, and oceans. The third edition provides numerous end-of-chapter problems and an expanded solutions manual. Also introduced in this edition are PowerPoints slides for all chapters so that instructors have a ready-made course. Key distinguishing features of this book include: detailed coverage of the science behind water-quality regulations, state-of-the-art methods for calculating total maximum daily loads (TMDLs) for the remediation of impaired waters, modeling and control of nutrient levels in lakes and reservoirs, design of constructed treatment wetlands, design of groundwater remediation systems, design of ocean outfalls, control of oil spills in the ocean, and the design of systems to control the quality of surface runoff from watersheds into their receiving waters. In addition, the entire book is updated to provide the latest advances in the field of water-quality control. For example, concepts such as mixing zones are expanded to include physical nature and regulatory importance of mixing zones, practical aspects of outfall and diffuser design are also included, specific details of water-quality modeling are updated to reflect the latest developments on this topic, and new findings relating to priority and emerging pollutants are added.

A readable and user-friendly introduction to fluid mechanics, this high-level text is geared toward advanced undergraduates and graduate students. Topics include a derivation of the equations of fluid motion from statistical mechanics, classical theory, and a portion of the modern mathematical theory of viscous, incompressible fluids, with considerable attention to the Navier-Stokes equations. 1973 edition.

Infolge des technischen Fortschritts werden Bauelemente und Systeme haufig auch in ihrer Groesse verandert. Aufgrund der Massstabsanderung weisen sie meistens ein geandertes physikalisches Verhalten und damit auch andere Eigenschaften auf.Das in diesem Buch beschriebene Verfahren der Skalierung ermoeglicht ohne grossen zeitlichen und finanziellen Aufwand das Verhalten und die Eigenschaften dieser in ihrer Groesse veranderten Bauelemente und Systeme zu bestimmen bzw. vorherzusagen. Der Leser wird uber zahlreiche Beispiele und Anwendungen verstandlich in die Skalierung der physikalischen Gesetze und der mathematischen Modellierung eingefuhrt. Es gibt wohl derzeit kein vergleichbares Werk, welches die Skalierung uber die physikalischen Gebiete der Mechanik, der Schwingungen und Wellen, der Fluidik, der Thermodynamik und des Elektromagnetismus in dieser Ausfuhrlichkeit darstellt. Erstmals wird auch der Einfluss der mathematischen Methoden auf die Skalierung umfassend behandelt. Das Buch richtet sich an Studierende der Ingenieurwissenschaften und der Physik. Es ist aber auch unentbehrlich fur jeden, der sich mit der Entwicklung von neuen innovativen Produkten und Systemen im Bereich der Miniaturisierung beschaftigt.