scholarly journals Discharge Coefficient for Sharp-Crested Side Weir in Supercritical Flow

2006 ◽  
Vol 39 (2) ◽  
pp. 17 ◽  
Author(s):  
K. P. P. Pathirana ◽  
M. M. Munas ◽  
A. L. A. Jaleel
Keyword(s):  
Discharge Coefficient ◽  
Side Weir ◽  
Supercritical Flow

Discharge Coefficient of Rectangular Side Weirs on Circular Channels

2016 ◽  
Vol 17 (7-8) ◽  
pp. 391-399 ◽  
Author(s):  
Hamed Azimi ◽  
Saeid Shabanlou ◽  
Isa Ebtehaj ◽  
Hossein Bonakdari
Keyword(s):  
Free Surface ◽  
Numerical Model ◽  
Flow Regime ◽  
Discharge Coefficient ◽  
Three Dimensional ◽  
Free Surface Flow ◽  
Energy Difference ◽  
Surface Flow ◽  
Side Weir ◽  
Supercritical Flow

AbstractIn this study, the flow turbulence and variations of the supercritical free surface flow in a circular channel along a side weir are simulated as three dimensional using the RNG k-ε turbulence model and volume of fluid (VOF) scheme. Comparison between the numerical model and experimental measurements shows that the numerical model simulates the free surface flow with good accuracy. According to the numerical model results, the specific energy variations along the side weir for the supercritical flow regime are almost constant and the energy drop is not significant but by increasing the side weir length the energy difference between the side weir upstream and downstream increases. Next, using the nonlinear regression (NLR) and analysis of the simulation results, some relationships for calculating the discharge coefficient of side weir on circular channels in supercritical flow regime are provided.

Supercritical flow over a rectangular side weir

2003 ◽  
Vol 30 (3) ◽  
pp. 596-600 ◽  
Author(s):  
Masoud Ghodsian
Keyword(s):  
Discharge Coefficient ◽  
Hydraulic Characteristics ◽  
Height Ratio ◽  
Side Weir ◽  
Supercritical Flow ◽  
Urban Sewage ◽  
Land Drainage ◽  
Weir Height ◽  
Side Weirs ◽  
Sewage Systems

Side weirs are flow-diversion devices widely used in irrigation, land drainage, and urban sewage systems. Hydraulic characteristics of a sharp-crested rectangular side weir under supercritical flow have been studied in this paper. The concept of elementary discharge coefficient for supercritical flow is introduced. The elementary discharge coefficient has been related to head weir height ratio and local Froude number. Suitable equations for the elementary discharge coefficient are introduced.Key words: supercritical flow, sharp crested, rectangular side weir, elementary discharge coefficient.

Triangular Side Weir Discharge Coefficient Calculation and Comparison Using ANN

INAE Letters ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 59-63
Author(s):  
Hana A. Hayawi ◽  
Azza N. Al-Talib ◽  
Noor I. Kattab
Keyword(s):  
Discharge Coefficient ◽  
Side Weir ◽  
Triangular Side Weir
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