IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Topic C: Water Engineering for the Protection and Enhancement of Natural Watershed/Aquifer Environme... : Effects of blockage ratio on energy loss through rectangular bar trashracks for hydro-turbines
Effects of blockage ratio on energy loss through rectangular bar trashracks for hydro-turbines
Author : Shawn P. Clark and Jonathan M. Tsikata
An experimental study of the effects of blockage ratio, approach flow inclination and approach velocity on energy loss through submerged trashrack models is reported. The trashrack models were comprised of an array of rectangular bars that were placed in rectangular conduit. The tests were performed for both straight and oblique approach flows. Pressure measurements were made using several piezometer taps that were inserted along the centerline of the conduit sidewall. The pressure head differences at far upstream and downstream of the trashrack models were then obtained to study the effects of approach velocity, approach flow inclination and blockage ratio on head loss. The results show that the head loss increases with increasing approach velocity, approach flow inclination and blockage ratio.
File Size : 188,391 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic C: Water Engineering for the Protection and Enhancement of Natural Watershed/Aquifer Environments
Date Published : 09/08/2009
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