Download or read book Experimental and Analytical Modeling of Natural Circulation and Forced Circulation BWRs written by Masahiro Furuya and published by IOS Press. This book was released on 2006 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: 20% of the Nuclear Power Plants are known as Boiling Water Reactors (BWRs). These BWRs have pumps that cool their reactor. In the design of new BWRs, ways to cool the core by a natural circulation flow, without pumps, also called natural circulation BWRs, are being considered. In these new systems, a chimney is installed on top of the core to increase natural circulation flow. A possible disadvantage of natural circulation BWRs might be their susceptibility to instabilities, which could then lead to both flow and power oscillations. The stability features of both natural circulation and forced circulation BWRs have been investigated thoroughly, using dedicated experimental setups, analytical models and numerical codes. We distinguish between pure thermal-hydraulic stability - where the fission power is assumed to be constant - and coupled thermalhydraulic-neutronic stability - where the two-phase mixture in the core influences the fission chain reaction...
Download or read book Thermoacoustic Instability written by R. I. Sujith and published by Springer Nature. This book was released on 2021-12-14 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book systematically presents the consolidated findings of the phenomenon of self-organization observed during the onset of thermoacoustic instability using approaches from dynamical systems and complex systems theory. Over the last decade, several complex dynamical states beyond limit cycle oscillations such as quasiperiodicity, frequency-locking, period-n, chaos, strange non-chaos, and intermittency have been discovered in thermoacoustic systems operated in laminar and turbulent flow regimes. During the onset of thermoacoustic instability in turbulent systems, an ordered acoustic field and large coherent vortices emerge from the background of turbulent combustion. This emergence of order from disorder in both temporal and spatiotemporal dynamics is explored in the contexts of synchronization, pattern formation, collective interaction, multifractality, and complex networks. For the past six decades, the spontaneous emergence of large amplitude, self-sustained, tonal oscillations in confined combustion systems, characterized as thermoacoustic instability, has remained one of the most challenging areas of research. The presence of such instabilities continues to hinder the development and deployment of high-performance combustion systems used in power generation and propulsion applications. Even with the advent of sophisticated measurement techniques to aid experimental investigations and vast improvements in computational power necessary to capture flow physics in high fidelity simulations, conventional reductionist approaches have not succeeded in explaining the plethora of dynamical behaviors and the associated complexities that arise in practical combustion systems. As a result, models and theories based on such approaches are limited in their application to mitigate or evade thermoacoustic instabilities, which continue to be among the biggest concerns for engine manufacturers today. This book helps to overcome these limitations by providing appropriate methodologies to deal with nonlinear thermoacoustic oscillations, and by developing control strategies that can mitigate and forewarn thermoacoustic instabilities. The book is also beneficial to scientists and engineers studying the occurrence of several other instabilities, such as flow-induced vibrations, compressor surge, aeroacoustics and aeroelastic instabilities in diverse fluid-mechanical environments, to graduate students who intend to apply dynamical systems and complex systems approach to their areas of research, and to physicists who look for experimental applications of their theoretical findings on nonlinear and complex systems.
Download or read book Report written by India. Ministry of External Affairs and published by . This book was released on 1995 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin of the Institution of Engineers India written by Institution of Engineers (India) and published by . This book was released on 1980 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Late Lessons from Early Warnings written by European Environment Agency and published by Luxembourg : Office for Official Publications of the European Communities. This book was released on 2001 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: The precautionary principle is widely seen as fundamental to successful policies for sustainability. This title looks back over the last century to examine the role the principle played in a range of major and avoidable public disasters.
Download or read book The Precautionary Principle in the 20th Century written by Paul Harremoes and published by Routledge. This book was released on 2013-10-11 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: The precautionary principle is widely seen as fundamental to successful policies for sustainability. It has been cited in international courts and trade disputes between the USA and the EU, and invoked in a growing range of political debates. Understanding what it can and cannot achieve is therefore crucial. This volume looks back over the last century to examine the role the principle played or could have played, in a range of major and avoidable public disasters. From detailed investigation of how each disaster unfolded, what the impacts were and what measures were adopted, the authors draw lessons and establish criteria that could help to minimise the health and environmental risks of future technological, economic and policy innovations. This is an informative resource for all those from lawyers and policy-makers, to researchers and students needing to understand or apply the principle.
Download or read book Subsea Engineering Handbook written by Yong Bai and published by Gulf Professional Publishing. This book was released on 2012-01-13 with total page 957 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subsea production systems, overview of subsea engineering, subsea field development, subsea distribution system. Flow assurance and system engineering. Susea structure and equiment. Subsea umbilical, risers and flowlines.
Download or read book Capture based Aquaculture written by Francesca Ottolenghi and published by Fao. This book was released on 2004 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The aim of this report is to define and review this "semi-aquaculture practice", which has been more accurately named "capture-based aquaculture." -- Preface.
Download or read book Environmental Acronyms Abbreviations and Glossary of Terms written by Executive Enterprises, Inc. and published by Wiley. This book was released on 1991-08-01 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: This useful guide contains more than 3,000 environmental acronyms and abbreviations. It also includes a glossary of more than 1,000 environmental terms for those frequently used but difficult to find expressions, written in non-technical, easy-to-understand language.
Download or read book Coal Energy Systems written by Bruce G. Miller and published by Academic Press. This book was released on 2005 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Volume in the Sustainable World Series, Richard C. Dorf, Series Editor Coal is currently a major energy source in the United States as well as throughout the world, especially among many developing countries, and will continue to be so for many years. Fossil fuels will continue to be the dominant energy source for fueling the United States economy, with coal playing a major role for decades. Coal provides stability in price and availability, will continue to be a major source of electricity generation, will be the major source of hydrogen for the coming hydrogen economy, and has the potential to become an important source of liquid fuels. Conservation and renewable/sustainable energy are important in the overall energy picture, but will play a lesser role in helping us satisfy our energy demands. This book is a single source covering many coal-related subjects of interest ranging from explaining what coal is, where it is distributed and quantities it can be found in throughout the world, technical and policy issues regarding the use of coal, technologies used and under development for utilizing coal to produce heat, electricity, and chemicals with low environmental impact, vision for utilizing coal well into the 21st century, and the security coal presents. Key Features: ·A single-source reference for the energy professional, policy maker, and those interested in learning about the value of coal as an energy source that covers many aspects of coal and its use. ·Provides a comprehensive discussion of technical and policy issues regarding the use of coal. ·Presents coal's increasing role in providing energy security to the United States and other countries. ·Gives an up-to-date review of current energy usage, environmental issues, clean coal technologies under development, and policy factors affecting the use of coal. ·Addresses misconceptions of coal usage by illustrating that it can be used in an environmentally-friendly manner. Related Titles: Technology, Humans, and Society: Toward a Sustainable World. Richard C. Dorf, 2001. 0-12-221090-5 Wind Power in View: Energy Landscapes in a Crowded World. Martin J. Pasqualetti, Paul Gipe, Robert W. Righter, 2002. 0-12-546334-0
Download or read book Floating Ocean Platform written by Ronald N. Kostoff and published by . This book was released on 2003-08-01 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: In FY 1990, Congress directed the Secretary of the Navy to commission a study by the National Academy of Sciences for the production of an integrated technology plan for the evolution of aircraft carriers in the first half of the twenty-first century. The House-Senate conferees emphasized "that the product of this study is to be a technology plan for the evolution of sea bases for the most efficient and economical accommodation of tactical air power in the first half of the twenty-first century". Based on this broad charter of evaluating sea bases, an examination of the floating ocean platform concept was included in the study. The floating ocean platform is a generic description of a large, relatively stationary or slowly mobile, platform that can be positioned in most areas of the ocean, and can serve a variety of purposes. The present report was the author's input to the study. It was based on technical analyses, literature reviews and surveys, and discussions/visits with the main groups and organizations involved in developing the floating ocean platform. All discussion material was unclassified, as are the contents of this report. All the external inputs and discussions, too numerous to mention, made this report possible, and are greatly appreciated. The first part of this report is the summary narrative that was submitted by the author to the Technology Group of the study. The second part is the viewgraphs that were presented to the Technology Group by the author on 12 February 1991. The third part is a selected bibliography of studies on the floating ocean platform over the past two decades, with over three thousand references identified.
Download or read book Table for Four written by K Srilata and published by Penguin UK. This book was released on 2011-07-19 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is their last evening together. Maya, Sandra and Derek, graduate students at UC Santa Cruz and house-mates for three years, are preparing for dinner with Uncle Prithvi, the house-owner. It’s a cheerful and quirky household: Sandra is prone to ‘Orkut attacks’; Derek silently pines for the wistful-looking Afghan boy in the photo on his wall; Maya, who has the hots for Derek, is inexplicably terrified of the ocean; and the elusive Uncle Prithvi communicates through notes he leaves all over the place. Sad at parting, perhaps forever, and half tipsy, Maya, Sandra and Uncle Prithvi play a game of wapping stories as they wait for Derek to arrive. As the evening progresses, we learn their deep, dark secrets and hidden fears. Sandra, abandoned at birth, talks about growing up in an orphanage with her precious twin, disabled Solana, only to be separated by circumstances; Uncle Prithvi rues the loss of his beloved daughter, whom he betrayed when he sought a new life with Karen in the US. Maya, the narrator, can’t bring herself to open up—except when alone. And Derek avoids revealing himself altogether as he doesn’t turn up at all. Finely crafted and deeply felt, Table for Four is a rumination on the burden of secrets, of learning to let go and accepting the betrayals and losses in our lives.
Download or read book A Dictionary of Medical Science written by Robley Dunglison and published by . This book was released on 1857 with total page 998 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Accuracy Computing Methods written by Tapan Sengupta and published by Cambridge University Press. This book was released on 2013-05-16 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: ""Presents methods necessary for high accuracy computing of fluid flow and wave phenomena in single source format using unified spectral theory of computing"--Provided by publisher"--
Download or read book Theoretical and Computational Aerodynamics written by Tapan K. Sengupta and published by John Wiley & Sons. This book was released on 2014-11-17 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamics has seen many developments due to the growth of scientific computing, which has caused the design cycle time of aerospace vehicles to be heavily reduced. Today computational aerodynamics appears in the preliminary step of a new design, relegating costly, time-consuming wind tunnel testing to the final stages of design. Theoretical and Computational Aerodynamics is aimed to be a comprehensive textbook, covering classical aerodynamic theories and recent applications made possible by computational aerodynamics. It starts with a discussion on lift and drag from an overall dynamical approach, and after stating the governing Navier-Stokes equation, covers potential flows and panel method. Low aspect ratio and delta wings (including vortex breakdown) are also discussed in detail, and after introducing boundary layer theory, computational aerodynamics is covered for DNS and LES. Other topics covered are on flow transition to analyse NLF airfoils, bypass transition, streamwise and cross-flow instability over swept wings, viscous transonic flow over airfoils, low Reynolds number aerodynamics, high lift devices and flow control. Key features: Blends classical theories of incompressible aerodynamics to panel methods Covers lifting surface theories and low aspect ratio wing and wing-body aerodynamics Presents computational aerodynamics from first principles for incompressible and compressible flows Covers unsteady and low Reynolds number aerodynamics Includes an up-to-date account of DNS of airfoil aerodynamics including flow transition for NLF airfoils Contains chapter problems and illustrative examples Accompanied by a website hosting problems and a solution manual Theoretical and Computational Aerodynamics is an ideal textbook for undergraduate and graduate students, and is also aimed to be a useful resource book on aerodynamics for researchers and practitioners in the research labs and the industry.
Download or read book Industrial Waste Treatment Handbook written by Frank Woodard and published by Elsevier. This book was released on 2001-09-11 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: All industries produce waste products that unless treated or mitigated in some way will be harmful to the human or natural environment. These waste products will generally need to be identified according to the industrial process in question, neutralized or rendered less harmful and finally disposed of into the surrounding land, air or watercourses. It is therefore of vital importance to every environmental, pollution or plant manager or engineer that these processes be fully understood and implemented or the cost to either the company or the environment can be catastrophic.With increasing government regulation of pollution, as well as willingness to levy punitive fines for transgressions, and the ever-present financial imperative to carry out these activities in the most efficient and cost-effective manner it is the responsibility of the professionals in question to ensure that they have the most up-to-date information available at their disposal. This book provides not only that, but the only available methodology for identifying which waste types are produced from which industrial processes, and how they can be treated. This unique feature makes this book one that every environmental, industrial and plant manager, engineer and consultant will want to have on their bookshelf.Essential aspect of, and requirement for, all manufacturing industryThe only up-to-date book on this subject area availableTakes a practical applications standpoint, not a theoretical approach
Download or read book Instabilities of Flows and Transition to Turbulence written by Tapan K. Sengupta and published by CRC Press. This book was released on 2012-04-24 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addressing classical material as well as new perspectives, Instabilities of Flows and Transition to Turbulence presents a concise, up-to-date treatment of theory and applications of viscous flow instability. It covers materials from classical instability to contemporary research areas including bluff body flow instability, mixed convection flows, and application areas of aerospace and other branches of engineering. Transforms and perturbation techniques are used to link linear instability with receptivity of flows, as developed by the author. The book: Provides complete coverage of transition concepts, including receptivity and flow instability Introduces linear receptivity using bi-lateral Fourier-Laplace transform techniques Presents natural laminar flow (NLF) airfoil analysis and design as a practical application of classical and bypass transition Distinguishes strictly between instability and receptivity, which leads to identification of wall- and free stream-modes Describes energy-based receptivity theory for the description of bypass transitions Instabilities of Flows and Transition to Turbulence has evolved into an account of the personal research interests of the author over the years. A conscious effort has been made to keep the treatment at an elementary level requiring rudimentary knowledge of calculus, the Fourier-Laplace transform, and complex analysis. The book is equally amenable to undergraduate students, as well as researchers in the field.
