Hydraulic characteristics of tyrolean weirs having steel racks and circular-perforated entry

Date

2012

Author

Şahiner, Halit

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Tyrolean type water-intake structures are commonly used on mountain rivers to supply water to hydropower stations. The amount of water to be diverted from the main channel is the major concern in these kind of structures and should not be less than the design discharge. In this study a physical model of a Tyrolean type water-intake structure was built at the laboratory and the diverted flow from the main channel through the intake structure having steel racks and perforated plates of different types were measured. The experiments were conducted in two stages. In the first stage the tests were carried out with only steel racks having three different bar openings and slopes, and in the second stage, perforated screens of three different circular openings and screen slopes were used. Applying dimensional analysis to the related parameters of the system the dimensionless terms were defined for the water capture efficiency and discharge coefficient of the system, and their variations with the relevant parameters were plotted. Using these diagrams one can determine the amount of water to be diverted by a Tyrolean weir of known geometry and main channel discharge.

Subject Keywords

Hydraulic Engineering.

URI

http://etd.lib.metu.edu.tr/upload/12614247/index.pdf
https://hdl.handle.net/11511/21324

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

H. Şahiner, “Hydraulic characteristics of tyrolean weirs having steel racks and circular-perforated entry,” M.S. - Master of Science, Middle East Technical University, 2012.