Volume 18, Number 67 (Spring 2014)                   JWSS 2014, 18(67): 301-308 | Back to browse issues page

XML Persian Abstract Print

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

A. Masjedi, A. Taeedi. Laboratory Study of Channel Slope and Rod Diameter Effect on Intake Discharge Coefficient under Rack Floor Condition. JWSS. 2014; 18 (67) :301-308
URL: http://jstnar.iut.ac.ir/article-1-1595-en.html

Abstract:   (5318 Views)
Floor intake is one of the best options for diverting mountain rivers' flow. Determination of discharge diverted in different conditions of flow in main channel is one of the main objectives for intake under rack floor condition. Gradient and shape of grid rod floor can affect the discharge deviated. In this experiment, placement and gradient of grid rods and also their effects on the discharge coefficient and hydraulic parameters were investigated. For this purpose, a physical model made of glass with variable gradient was used for the main channel. To conduct and measure the discharge diverted, a sub-channel 8 meters away from the entrance of main channel was installed below the main channel. Length and width of intake entrance were 10 and 50 cm, respectively. At the entrance of intake a longitudinal grid with four different rod diameters, constant-space passing, and four different gradients were used. Meanwhile, for the investigation of flow rate four discharges were used. The results showed that intake discharge coefficient was increased with an increase in diameter of grid rod floor, reduction in floor gradient, and increasing of depth in the upstream network. In all cases, increasing the Froude number resulted in an increase in the intake discharge coefficient in the upstream network
Full-Text [PDF 174 kb]   (783 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2011/08/1 | Accepted: 2013/03/3 | Published: 2014/06/16

Add your comments about this article : Your username or email:
Write the security code in the box

© 2015 All Rights Reserved | JWSS - Isfahan University of Technology

Designed & Developed by : Yektaweb