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 B: Water Engineering in Support of Built Environments : Oblique side weir
Oblique side weir
Author : A.Parvaneh, S.M.Borghei
Side weir, as a flow diverting structure in rivers and channels, is used to control discharge in the main stream. Oblique side weir is one type of this kind of weirs, which have recently been used when the length of opening in the channel wall is limited. One of the advantages of oblique weir is to increase the effective length of weir perpendicular to the flow and, therefore, diverting more discharge with the same flow depth and weir geometry (opening and height). In this paper, experimental setup of oblique side weir with asymmetric geometry has been studied. The change to the geometry of ordinary oblique side weirs causes an increase in the effectiveness of the length of weir as being more in line with the stream lines. Thus, hydraulic behavior of this kind of oblique side weir with a constant opening length and different heights and oblique angle has been investigated. The results show that this kind of weir is more efficient than the ordinary oblique weir and up to 35 % more efficient respect to normal rectangular side weir in a rectangular channel. Finally, the discharge coefficient as a function of geometrical and flow variables are presented.
File Size : 247,587 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Topic B: Water Engineering in Support of Built Environments
Date Published : 09/08/2009
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