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Hydraulic Design Of Labyrinth Weirs
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Book Synopsis Hydraulic Design of Labyrinth Weirs by : Henry T. Falvey
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
Book Synopsis Developments in the Hydraulic Design of Labyrinth Weirs by : Bahram Aminipouri
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:
Book Synopsis Labyrinth and Piano Key Weirs by : Sébastien Erpicum
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
Book Synopsis Labyrinth Weirs by : Brian Mark Crookston
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.
Book Synopsis Hydraulic Design of Side Weirs by : R. W. P. May
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.
Book Synopsis Labyrinth and Piano Key Weirs II by : Sébastien Erpicum
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.
Book Synopsis Hydraulic Characteristics of Labyrinth Weirs by : Corwin M. Willmore
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 .
Book Synopsis Hydraulic Engineering of Dams by : Willi H. Hager
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.
Book Synopsis Hydraulics of Spillways and Energy Dissipators by : Rajnikant M. Khatsuria
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
Download or read book River Hydraulics written by Ramakar Jha and published by Springer Nature. This book was released on 2021-12-11 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents key principles of the hydraulics of river basins, with a unique focus on the interplay between stream flows and sediment transport. Addressing a number of basic topics related to the hydraulics of river systems, above all it emphasizes applicative aspects in order to provide the reader with a solid grasp of river engineering. The understanding of the river hydraulics is essential for the assessment of optimum locations for the conservation of water resources and its structures. This book will be interesting to readers and researchers working in the specialized area of river hydraulics of Ganga basin, Narmada, Tapi, Godavari, and other basins of India. It consists of review on hydraulics of meandering river; hydraulic design of reservoir in permeable pavement; optimization of hydraulic design; hydraulic investigations to optimize the design of spillway and design of energy dissipater; and analysis of performance of orifice spillway using computational fluid dynaics
Book Synopsis Design of Labyrinth Weirs by : David R. Waldron
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:
Book Synopsis Hydraulic and Dynamic Assessment of Triangular Labyrinth Weirs and Wier-pool Type Fishways by : Shahram Dizabadi
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.
Book Synopsis Dams and Public Safety by : Robert B. Jansen
Download or read book Dams and Public Safety written by Robert B. Jansen and published by . This book was released on 1983 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydraulic Model Study of Ute Dam Labyrinth Spillway by : Kathleen Houston Frizell
Download or read book Hydraulic Model Study of Ute Dam Labyrinth Spillway written by Kathleen Houston Frizell and published by . This book was released on 1982 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydraulic Structures written by P. Novak and published by CRC Press. This book was released on 2017-12-21 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now includes Worked Examples for lectutrers in a companion pdf! The fourth edition of this volume presents design principles and practical guidance for key hydraulic structures. Fully revised and updated, this new edition contains enhanced texts and sections on: environmental issues and the World Commission on Dams partially saturated soils, small amenity dams, tailing dams, upstream dam face protection and the rehabilitation of embankment dams RCC dams and the upgrading of masonry and concrete dams flow over stepped spillways and scour in plunge pools cavitation, aeration and vibration of gates risk analysis and contingency planning in dam safety small hydroelectric power development and tidal and wave power wave statistics, pipeline stability, wave–structure interaction and coastal modelling computational models in hydraulic engineering. The book's key topics are explored in two parts - dam engineering and other hydraulic structures – and the text concludes with a chapter on models in hydraulic engineering. Worked numerical examples supplement the main text and extensive lists of references conclude each chapter. Hydraulic Structures provides advanced students with a solid foundation in the subject and is a useful reference source for researchers, designers and other professionals.
Book Synopsis Design of Small Dams by : United States. Bureau of Reclamation
Download or read book Design of Small Dams written by United States. Bureau of Reclamation and published by . This book was released on 1973 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydraulics of Stepped Chutes and Spillways by : Hubert Chanson
Download or read book Hydraulics of Stepped Chutes and Spillways written by Hubert Chanson and published by CRC Press. This book was released on 2002-01-01 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stepped channel design has been in use for more than 3,500 years. Recent advances in technology have triggered a regained interest in stepped design, although much expertise has been lost in the last 80 years. The steps significantly increase the rate of energy dissipation taking place along the chute and reduce the size of the required downstream energy dissipation basin. Stepped cascades are also used in water treatment plants to enhance the air-water transfer of atmospheric gases (e.g. oxygen, nitrogen) and of volatile organic components (VOC). Results from more than forty-five laboratory studies and four prototype investigations were re-analysed and compared. The book provides a new understanding of stepped channel hydraulics, and is aimed both at researchers and professionals.
