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Author: Ernest Brater Publisher: ISBN: Category : Science Languages : en Pages : 630
Book Description
Fluid properties and hydraulic units - Hydrostatics - Fundamental concepts of fluid flow - Orifices, gates, and tubes - Weirs - Pipes - Steady uniform flow in open channels - Open channels with nonuniform flow - High-velocity transitions - Wave motion and forces - Spatially variable and unsteady flow - Measurement of flowing water - Computational hydraulics - Computer programs in hydraulics.
Author: Samuel Egnew Tingey Publisher: ISBN: Category : Languages : en Pages :
Book Description
Oblique weirs are those weirs placed at an angle with respect to the channel centerline. They can be used in canal applications where more discharge is needed, but there is limited freeboard. The discharge coefficients were determined for 54 different weirs by measuring total head for various flows over each weir. These weirs included sharp, half round and quarter-round-crested weirs. There were 18 weirs for each crest shape with three weir heights for each angle tested. The oblique angles tested were 10℗ʻ, 15℗ʻ, 25℗ʻ, 45℗ʻ, 60℗ʻ, and 90℗ʻ with respect to the channel centerline, with the nominal weir heights being 4, 8, and 12 inches. The half-round-crested weirs were the most efficient, followed by the quarter-round-crested weirs and the sharp-crested weirs were the least efficient. By decreasing the oblique angle, the weir length became longer and the weir would be more efficient than the normal weir.
Author: Samuel Egnew Tingey Publisher: ISBN: Category : Languages : en Pages : 62
Book Description
Oblique weirs are those weirs placed at an angle with respect to the channel centerline. They can be used in canal applications where more discharge is needed, but there is limited freeboard. The discharge coefficients were determined for 54 different weirs by measuring total head for various flows over each weir. These weirs included sharp, half round and quarter-round-crested weirs. There were 18 weirs for each crest shape with three weir heights for each angle tested. The oblique angles tested were 10°, 15°, 25°, 45°, 60°, and 90° with respect to the channel centerline, with the nominal weir heights being 4, 8, and 12 inches. The half-round-crested weirs were the most efficient, followed by the quarter-round-crested weirs and the sharp-crested weirs were the least efficient. By decreasing the oblique angle, the weir length became longer and the weir would be more efficient than the normal weir.
Author: Ernest Brater Publisher: ISBN: Category : Science Languages : en Pages : 630
Book Description
Fluid properties and hydraulic units - Hydrostatics - Fundamental concepts of fluid flow - Orifices, gates, and tubes - Weirs - Pipes - Steady uniform flow in open channels - Open channels with nonuniform flow - High-velocity transitions - Wave motion and forces - Spatially variable and unsteady flow - Measurement of flowing water - Computational hydraulics - Computer programs in hydraulics.
Author: Dattatraya Londhe Publisher: LAP Lambert Academic Publishing ISBN: 9783659422614 Category : Languages : en Pages : 64
Book Description
Discharge coefficient is usually dependent on dimensionless parameters such as Reynold's number and Weber number associated with dynamic conditions of flow over the structure, and ratios of weir, notch and flume dimensions which reflect variations in the geometrical design of the measuring structures. The data are presented to provide engineers with a means of estimating discharge coefficients for rectangular weirs whether they are flat-topped or sharp-crested. The information contained herein will provide a description of the testing apparatus and the manner in which the discharge coefficients should be used. As part of the research conducted, discharge coefficient scale effects for weir, much data was collected for various flat-topped and sharp-crested weirs & the values for height/width are determined with the help of various methods. These are varied according to the dimension of the weirs & resulted into the small, intermittent and large ones. The material from which the structures are fabricated are obtained cheaply available in the market & the methods which are applied for cutting the structures in specific dimensions are done very easily, such as Gas-cutter method.
Author: Sébastien Erpicum Publisher: CRC Press ISBN: 0203804066 Category : Technology & Engineering Languages : en Pages : 314
Book Description
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: 1351687824 Category : Technology & Engineering Languages : en Pages : 288
Book Description
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: Ernest Brater
Author: Samuel Egnew Tingey
Author: Samuel Egnew Tingey
Author: H. J. Tracy
Author: Ernest Brater
Author: Zehra Gül Turhan
Author: Cecil Ruffell Russell
Author: Dattatraya Londhe
Author: United States. Bureau of Reclamation
Author: Sébastien Erpicum
Author: Sébastien Erpicum