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Author : Bahram Aminipouri
Publisher :
ISBN 13 :
Total Pages : 272 pages
Book Rating : 4.:/5 (246 download)
Download or read book Developments in the Hydraulic Design of Labyrinth Weirs written by Bahram Aminipouri and published by . This book was released on 1991 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Henry T. Falvey
Publisher : American Society of Civil Engineers
ISBN 13 : 9780784406311
Total Pages : 162 pages
Book Rating : 4.4/5 (63 download)
Download or read book Hydraulic Design of Labyrinth Weirs written by Henry T. Falvey and published by American Society of Civil Engineers. This book was released on 2003-01 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: A labyrinth weir is a series of duckbill spillways for controlling the flow of water over a dam or channel. This slim volume compares the crest shapes used on weirs, identifies considerations for designing downstream chutes and dealing with sedimentation, explores general guidelines for parameter se
Author : Sébastien Erpicum
Publisher : CRC Press
ISBN 13 : 0203804066
Total Pages : 314 pages
Book Rating : 4.2/5 (38 download)
Download or read book Labyrinth and Piano Key Weirs written by Sébastien Erpicum and published by CRC Press. This book was released on 2011-05-10 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Labyrinth spillways are almost as old as dam engineering. In spite of the fact that they appear as a very good technical-economical compromise, only 0.1% of large dams are equipped with such weirs. The main reason for this is that traditional labyrinth weirs usually cannot be installed on top of concrete gravity dams as they require a large foundat
Author : Sébastien Erpicum
Publisher : CRC Press
ISBN 13 : 113800085X
Total Pages : 314 pages
Book Rating : 4.1/5 (38 download)
Download or read book Labyrinth and Piano Key Weirs II written by Sébastien Erpicum and published by CRC Press. This book was released on 2013-10-21 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dam engineering is currently experiencing a strong revival of labyrinth oriented weirs. Labyrinth weirs, with a repetitive constructional character and an increased specific discharge capacity, are a very good technical-economical compromise. The concept of Piano Key Weir (PKW), with alveoli developed in overhangs from a reduced support area, enables the installation of non-linear crests at the top of concrete dams. As a result it eliminates the main drawback of classical labyrinth weirs, and enables their use to rehabilitate numerous existing dams. Since the first implementation of piano key weirs by Electricité de France on Goulours dam (France) in 2006, at least eight PKWs have been built in France, Vietnam and Switzerland. Their operation over a few years has already provided the first prototype data. Other projects are under study, construction or planning in varied countries. On another hand, research programs are under progress all over the world. Following a first edition in 2011, Labyrinth and Piano Key Weirs II – PKW 2013 collects up-to-date contributions from people with various backgrounds, from engineers and researchers to academics. Summarizing the last developments on labyrinth oriented weirs, the book constitutes the state-of-the-art in research and application of piano key weir solutions, and will be invaluable to professionals and scientists interested in Dams Engineering.
Author : Brian Mark Crookston
Publisher :
ISBN 13 :
Total Pages : 222 pages
Book Rating : 4.:/5 (694 download)
Download or read book Labyrinth Weirs written by Brian Mark Crookston and published by . This book was released on 2010 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Labyrinth weirs are often a favorable design option to regulate upstream water elevations and increase flow capacity; nevertheless, it can be difficult to engineer an optimal design due to the complex flow characteristics and the many geometric design variables of labyrinth weirs. This study was conducted to improve labyrinth weir design and analyses techniques using physical-model-based data sets from this and previous studies and by compiling published design methodologies and labyrinth weir information. A method for the hydraulic design and analyses of labyrinth weirs is presented. Discharge coefficient data for quarter-round and half-round labyrinth weirs are offered for 6° sidewall angles 35°. Cycle efficiency is also introduced to aid in sidewall angle selection. Parameters and hydraulic conditions that affect flow performance are discussed. The validity of this method is presented by comparing predicted results to data from previously published labyrinth weir studies. A standard geometric design layout for arced labyrinth weirs is presented. Insights and comparisons in hydraulic performance of half-round, trapezoidal, 6° and 12° sidewall angles, labyrinth weir spillways located in a reservoir with the following orientations are presented: Normal, Inverse, Projecting, Flush, Rounded Inlet, and Arced cycle configuration. Discharge coefficients and rating curves as a function of HT/P are offered. Finally, approaching flow conditions and geometric similitude are discussed; hydraulic design tools are recommended to be used in conjunction with the hydraulic design and analysis method. Nappe aeration conditions for trapezoidal labyrinth weirs on a horizontal apron with quarter- and half-round crests (6° sidewall angle 35°) are presented as a design tool. This includes specified HT/P ranges, associated hydraulic behaviors, and nappe instability phenomena. The effects of artificial aeration (a vented nappe) and aeration devices (vents and nappe breakers) on discharge capacity are also presented. Nappe interference for labyrinth weirs is defined; the effects of nappe interference on the discharge capacity of a labyrinth weir cycle are discussed, including the parameterization of nappe interference regions to be used in labyrinth weir design. Finally, the applicability of techniques developed for quantifying nappe interference of sharp-crested corner weirs is examined.
Author : R. W. P. May
Publisher : Thomas Telford
ISBN 13 : 9780727731678
Total Pages : 164 pages
Book Rating : 4.7/5 (316 download)
Download or read book Hydraulic Design of Side Weirs written by R. W. P. May and published by Thomas Telford. This book was released on 2003 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Side weirs are widely used to divert or discharge flows from reservoirs, rivers, artificial channels and sewers. The hydraulic behaviour of this type of weir is complex and difficult to predict accurately using simple methods and the diversity of applictions of side weirs has the potential to complicate guidance. This manual covers the fundamental hydraulic principles and discusses the practical design issues separately for each main strcuture type.
Author : Sébastien Erpicum
Publisher : CRC Press
ISBN 13 : 1351687824
Total Pages : 288 pages
Book Rating : 4.3/5 (516 download)
Download or read book Labyrinth and Piano Key Weirs III written by Sébastien Erpicum and published by CRC Press. This book was released on 2017-04-11 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first implementation by Electricité de France on the Goulours dam (France) in 2006, the Piano Key Weir has become a more and more applied solution to increase the discharge capacity of existing spillways. In parallel, several new large dam projects have been built with such a flood control structure, usually in combination with gates. Today, more than 25 Piano Key Weirs are in operation or under construction all over the world. More than 15 years of research and development have enabled detailed investigations of the hydraulic and structural behaviour of the Piano Key Weir complex structure and have provided more and more accurate design equations. Following the proceedings of the first two workshops held in Liege (Belgium – 2011) and Paris (France – 2013), Labyrinth and Piano Key Weirs III collects the contributions presented by people with varied background, from researchers to practitioners, at the 3rd International Workshop on Labyrinth and Piano Key Weirs - PKW 2017 (22-24 February 2017, Qui Nhon, Vietnam). The papers, reviewed and accepted by an International Scientific Committee, summarize the current state-of-the-art on Piano Key Weirs from a theoretical to a practical point of view, and present most of the main projects in operation or under construction. Labyrinth and Piano Key Weirs III is thus a reference for students, practitioners and researchers interested in Dams Engineering.
Author : Corwin M. Willmore
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (983 download)
Download or read book Hydraulic Characteristics of Labyrinth Weirs written by Corwin M. Willmore and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Primarily, half-round crest labyrinth weirs were tested in this study with the side leg angle (a) ranging between 7 to 35 degrees. Historical data was primarily limited to quarter-round data. This study presents data and equations for estimating the discharge coefficient for labyrinth weirs with both half-round, quarter-round, and two Ogee-type crest weir shapes . A method is presented for comparing the flow capacity between weirs in order to determine the most efficient weir at a given Ht/P. For a labyrinth weir with the crest shape,# of cycles (N), and the cycle width (w) held constant, the discharge coefficient (Cct) decreases with decreasing side angle (a). Based on those same geometric constraints the weir length increases with decreasing side angle (a). The dimensionless parameter Cct*LJIW (which when multiplied by 73fig H,312 gives the flow per unit width) was used to evaluate the relative discharge capacity between labyrinth weirs. The results from this study show that at low (Hr!P) values and a side leg angle of 7 and 8 degrees, an Ogee-type crest will pass more flow than a half-round crest which will pass more flow than a quarter-round crest. The effects of nappe conditions for half-round crest weirs were determined and documented for the configurations tested. The use of centerline length (L3) is used in this study over the use of the effective length (L) presented in the research. Modifications are applied to the Tullis et al. (1995) design procedure. The effect of uniform sediment deposition upstream of a labyrinth weir was tested to determine the effect it had on the discharge coefficient Cct. Both level and ramped approach conditions to a labyrinth weir apron were tested and compared . A review of literature covering previous design procedures, and laboratory tests is presented .
Author : Willi H. Hager
Publisher : CRC Press
ISBN 13 : 1135038031
Total Pages : 1081 pages
Book Rating : 4.1/5 (35 download)
Download or read book Hydraulic Engineering of Dams written by Willi H. Hager and published by CRC Press. This book was released on 2020-11-05 with total page 1081 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic engineering of dams and their appurtenant structures counts among the essential tasks to successfully design safe water-retaining reservoirs for hydroelectric power generation, flood retention, and irrigation and water supply demands. In view of climate change, especially dams and reservoirs, among other water infrastructure, will and have to play an even more important role than in the past as part of necessary mitigation and adaptation measures to satisfy vital needs in water supply, renewable energy and food worldwide as expressed in the Sustainable Development Goals of the United Nations. This book deals with the major hydraulic aspects of dam engineering considering recent developments in research and construction, namely overflow, conveyance and dissipations structures of spillways, river diversion facilities during construction, bottom and low-level outlets as well as intake structures. Furthermore, the book covers reservoir sedimentation, impulse waves and dambreak waves, which are relevant topics in view of sustainable and safe operation of reservoirs. The book is richly illustrated with photographs, highlighting the various appurtenant structures of dams addressed in the book chapters, as well as figures and diagrams showing important relations among the governing parameters of a certain phenomenon. An extensive literature review along with an updated bibliography complete this book.
Author : Monika B. Kalinowska
Publisher : Springer Nature
ISBN 13 : 3031560930
Total Pages : 405 pages
Book Rating : 4.0/5 (315 download)
Download or read book Advances in Hydraulic Research written by Monika B. Kalinowska and published by Springer Nature. This book was released on with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shahram Dizabadi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (128 download)
Download or read book Hydraulic and Dynamic Assessment of Triangular Labyrinth Weirs and Wier-pool Type Fishways written by Shahram Dizabadi and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The hydraulic performance of traditional labyrinth weirs has been extensively studied in the literature. The research outcomes indicated that labyrinth weirs have many hydraulic advantages to pass more flow with a constant water head which reduces the construction cost and improve flood prevention. In this study, a series of laboratory experiments was conducted to test a new weir design based on a classical triangular labyrinth weir. A square pool was added to the vertex of a triangular labyrinth weir in two different directions to form two new designs named as labyrinth weirs with upstream and downstream pools. Detailed velocity and turbulence measurements were conducted using an Acoustic Doppler Velocimetry (ADV) probe to investigate the flow dynamics and turbulence characteristics of the new design in both free and submerged flow conditions. The ability of using a series of the newly design weirs as a fish passage was tested by constructing a series of weirs with different weir spacing. The upstream flow velocities in three directions and the mean and the turbulent kinetic energies (TKE) were measured with the ADV probe. The mean velocity and the turbulent kinetic energy distribution indicated that the maximum range occurred in the corner of the main sidewall of the weir and the pool's sidewalls. The maximum longitudinal and vertical velocities and TKE for the weir with the upstream pool occurred inside the pool, whereas the maximum lateral velocity located in the vicinity of the main sidewall of the weir. In addition, the lateral velocity in the labyrinth weir with the upstream pool changed to the elevation equal to 70% of the upstream water level.
Author : David R. Waldron
Publisher :
ISBN 13 :
Total Pages : 188 pages
Book Rating : 4.:/5 (329 download)
Download or read book Design of Labyrinth Weirs written by David R. Waldron and published by . This book was released on 1994 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rajnikant M. Khatsuria
Publisher : CRC Press
ISBN 13 : 0203996984
Total Pages : 673 pages
Book Rating : 4.2/5 (39 download)
Download or read book Hydraulics of Spillways and Energy Dissipators written by Rajnikant M. Khatsuria and published by CRC Press. This book was released on 2004-10-27 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: An unsurpassed treatise on the state-of-the-science in the research and design of spillways and energy dissipators, Hydraulics of Spillways and Energy Dissipators compiles a vast amount of information and advancements from recent conferences and congresses devoted to the subject. It highlights developments in theory and practice and emphasizing top
Author : Chau Tsang (Chiu)
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (595 download)
Download or read book Hydraulic and Aeration Performance of Labyrinth Weirs written by Chau Tsang (Chiu) and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert B. Jansen
Publisher :
ISBN 13 :
Total Pages : 348 pages
Book Rating : 4.:/5 (319 download)
Download or read book Dams and Public Safety written by Robert B. Jansen and published by . This book was released on 1980 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ven Te Chow
Publisher : Elsevier
ISBN 13 : 1483215202
Total Pages : 431 pages
Book Rating : 4.4/5 (832 download)
Download or read book Advances in Hydroscience written by Ven Te Chow and published by Elsevier. This book was released on 2013-10-22 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Hydroscience, Volume 10-1975 covers articles on the evergrowing scientific knowledge on water. The book presents articles on modeling techniques for groundwater evaluation and tidal theory and computations, including the basic equations for the prediction of tides, the hydrodynamic tidal equations for the dynamic behavior of the tides, and tidal computations in rivers, seas, and coastal waters. The text also includes articles on hydrothermal convection in saturated porous media, as well as the theory of Weirs. Hydroscientists, harbour engineers, coastal engineers, oceanographic engineers, and future designers and users of hydraulic structures for water resources development will find the book invaluable.
Author : Jean-Pierre Tournier
Publisher : CRC Press
ISBN 13 : 1000596826
Total Pages : 384 pages
Book Rating : 4.0/5 (5 download)
Download or read book Sustainable and Safe Dams Around the World / Un monde de barrages durables et sécuritaires written by Jean-Pierre Tournier and published by CRC Press. This book was released on 2019-08-08 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings include digital media with the full conference papers (3600+ pages). Sustainable and Safe Dams Around the World contains the contributions presented at the 2019 Symposium of the International Commission on Large Dams (ICOLD 2019, Ottawa, Canada, 9-14 June 2019). The main topics of the book include: 1. Innovation (recent advancements and techniques for investigations, design, construction, operation and maintenance of water or tailings dams and spillways) 2. Sustainable Development (planning, design, construction, operation, decommissioning and closure management strategies for water resources or tailings dams, e.g. climate change, sedimentation, environmental protection, risk management). 3. Hazards (design mitigation and management of hazards to water or tailings dams, appurtenant structures, spillways and reservoirs (e.g. floods, seismic, landslides). 4. Extreme Conditions (management for water or tailings dams (e.g. permafrost and ice loading, arid/wet climates, geo-hazards). 5. Tailings (design, construction, operation and closure for tailings dams; recent advancements and best practice) Sustainable and Safe Dams Around the World will be invaluable to academics and professionals interested or involved in dams. Un monde de barrages durables et sécuritaires contiennent les contributions présentées lors du symposium de 2019 de la Commission internationale des grands barrages (CIGB 2019, Ottawa, Canada, 9-14 juin 2019). Les principaux sujets du livre incluent: 1. Innovation (Avancées et techniques récentes pour l’investigation, la conception, la construction, l’exploitation et l’entretien de barrages hydrauliques, de barrages de stériles et d’évacuateurs de crues) 2. Développement durable (stratégies de gestion pour la planification, la conception, la construction, l’exploitation, la mise hors service et la fermeture de barrages hydrauliques ou des barrages de stériles, par exemple, changement climatique, sédimentation, protection de l’environnement, gestion des risques). 3. Risques (mesures d’atténuation et gestion des risques liés aux barrages hydrauliques et barrages de stériles, aux ouvrages annexes, aux évacuateurs de crues et aux réservoirs, par exemple, inondations, tremblements de terre, glissements de terrain). 4. Environnement extrême (gestion des barrages hydrauliques et barrages de stériles, par exemple, pergélisol et charge de glace, climats secs / humides, géorisques). 5. Barrages de stériles (conception, construction, exploitation et fermeture des barrages de stériles; avancées récentes et meilleures pratiques). Un monde de barrages durables et sécuritaires seront d'une valeur inestimable pour les universitaires et les professionnels intéressés ou impliqués dans les barrages.
