The Effect of Semi-circular Side Weirs on Hydraulic Properties and Discharge Coefficient of Side Weirs
Journal Title: Journal of River Engineering - Year 2014, Vol 2, Issue 5
Abstract
Side weir is one of the most common hydraulic structures, which is used as a deviatory structure in rivers, irrigation and drainage channels and also in urban sewage collection systems.Semi-circular side weir can be an solution for increasing discharge coefficient. In present research the semi-circular side weir has been studied to find the influence of hydraulic and geometry variables on the value. Furthermore semi-circular side weir has been compared with labyrinth side weir with a beak angle °.105 experimental tests were conducted on the semi-circular and labyrinth side weir. Upstream Froude number and discharge coefficient were calculated. The results showed that semi-circular side weir has higher coefficient value in comparison with rectangular side weir and labyrinth side weir when beak angle is°. An inverse relationship between Value and was found. Also increase in dimensionless height of weir ( ⁄ ) was causes the value enhances. A new equation was developed to calculate .
Authors and Affiliations
H. Zahedi Khameneh - SR. Khodashenas - K. Esmaili
Keywords
Related Articles
- EP ID EP32977
- DOI -
- Views 371
- Downloads 0
Experimental Investigation on Flow Pattern of a Wall Jet
In this paper, effect of the bed roughness on the flow pattern in a wall jet is studied experimentally. Channel that experiments has been carried out included glass walls and metal floors with 0.57 meters width, 1 met...
Evalution of Landsat ETM Sensor To Separate Riparian Forest from River (Case Study: Maroon River – Khuzestan)
In order to evaluate Landsat satellite imagery and remote sensing applications in separation of land from the river in riparian forest of Maroon Behbahan, a small window of multispectral images Landsat ETM+ was chosen...
Investigation of Particle-Size Distribution and Friction Factor for a Gravel-Bed river: Marbar
The study of flow and sediment size distribution in gravel –bed Rivers has been the pivotal attention of many researchers for more than three decades. The surface grain size of gravel and cobble-bed rivers reflects the ca...
Determining the Optimum Pools Area and Volume: A case Study for Mazandaran Province
Water scarcity and its negative impacts on agricultural crops is one of the problems faced by agricultural sector. To cope with this, depending on the geographic conditions in each region, contrivances have been espec...
Comparison of Evapotranspiration Models for Estimating Reference Evapotranspiration in an Arid and semiarid Region, Northeast of Iran
In this study, evapotranspiration (ET0) was determined by several models for Bojnord city in Khorasan province. Outputs were obtained from IMO (Iran Meteorological Organization) weather station, located in the Bojnord...