Volume 12, Issue 46 (1-2009)                   jwss 2009, 12(46): 815-826 | Back to browse issues page

XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Izadi E, Heidar Pour M, Kabiri Samani A. Investigation of Flow Pattern over Circular Crested Side Weirs . jwss 2009; 12 (46) :815-826
URL: http://jstnar.iut.ac.ir/article-1-1161-en.html
, heidar@cc.iut.ac.ir
Abstract:   (24771 Views)
In this study, the flow characteristics have been investigated by measuring separation zone, surface and velocity profiles over the circular crested side weirs. An equation was proposed for the length of the separation zone using dimensional, statistical and regression analysis. The dimensional analysis showed that the length of separation zone depends on the upstream to the downstream water depth over the side weir, channel width to the downstream water depth and the Froude number. Comparison of the longitudinal and sectional surface profiles showed that the surface profiles at the vicinity of the side weir are non-uniform, due to separation zone close to the side weir. Therefore, the suitable place for measuring the characteristics of flow is along the centre line of the channel. It was observed that the maximum velocity occurred below the surface water which might be due to the secondary flow around the side weir. By increasing the distance far enough from the side weir, the effects of secondary flow were minimized and the velocity profiles tended to be uniform.
Full-Text [PDF 282 kb]   (2962 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2010/06/19 | Published: 2009/01/15

Add your comments about this article : Your username or Email:
CAPTCHA

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | JWSS - Isfahan University of Technology

Designed & Developed by : Yektaweb