Discharge Coefficient of a Circular-Crested Side Weir in Rectangular Channels

被引：5

作者：

Izadinia, Elham ^{[1
]}

Heidarpour, Manouchehr ^{[2
]}

机构：

[1] Shahid Ashrafi Esfahani Univ, Dept Civil Engn, Esfahan 8179849999, Iran

[2] Isfahan Univ Technol, Coll Agr, Dept Water Engn, Esfahan 8415683111, Iran

来源：

JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING | 2016年 / 142卷 / 06期

关键词：

Side weir; Circular-crested weir; Discharge coefficient; CRITICAL FLOW;

D O I：

10.1061/(ASCE)IR.1943-4774.0001025

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Side weirs are frequently used for water-level control in irrigation systems, sewer networks, and flood protection. Researches on side weirs have generally focused on determining the hydraulic characteristics of sharp-crested side weirs. A common type of this weir, which has larger capacity to pass the flow, is the circular-crested weir. To the authors' knowledge, investigation of hydraulic features of this weir as side weir has been ignored in literature. Based on an experimental model for subcritical flow conditions and under the hypothesis of constant specific energy, the hydraulic characteristics of the circular-crested side weir with various weir heights, widths, and downstream slopes are taken into account to formulate an expression for the discharge coefficient. The results indicate that the upstream Froude number, the weir height to weir length, specific energy to the weir radius, and downstream slope of the weir are the important variables that affect the discharge coefficient of circular-crested side weirs. A comparison between circular-crested and sharp-crested side weirs confirms that circular-crested side weirs are more economical and efficient than sharp-crested side weirs, due to the greater discharge coefficient. (C) 2016 American Society of Civil Engineers.

引用

页数：7

共 50 条

[31] Lateral flow through the sharp crested side rectangular weirs in open channels [J].

Shariq, Ali ;

Hussain, Ajmal ;

Ansari, Mujib Ahmad .

FLOW MEASUREMENT AND INSTRUMENTATION, 2018, 59 :8-17

[32] Estimating discharge coefficient of semi-elliptical side weir using ANFIS [J].

Dursun, O. Faruk ;

Kaya, Nihat ;

Firat, Mahmut .

JOURNAL OF HYDROLOGY, 2012, 426 :55-62

[33] Discharge and flow field of the circular channel along the side weir [J].

Azimi, Hamed ;

Hadad, Hazhar ;

Shokati, Zakarya ;

Salimi, Mohammad Sajad .

CANADIAN JOURNAL OF CIVIL ENGINEERING, 2015, 42 (04) :273-280

[34] Discharge coefficient of compound triangular-rectangular sharp-crested side weirs in subcritical flow conditions [J].

Ameri, Mojtaba ;

Ahmadi, Ahmad ;

Dehghani, Amir Ahmad .

FLOW MEASUREMENT AND INSTRUMENTATION, 2015, 45 :170-175

[35] Triangular Side Weir Discharge Coefficient Calculation and Comparison Using ANN [J].

Hana A. Hayawi ;

Azza N. Al-Talib ;

Noor I. Kattab .

INAE Letters, 2019, 4 (1) :59-63

[36] Predictive modeling the side weir discharge coefficient using neural network [J].

Parsaie A. .

Modeling Earth Systems and Environment, 2016, 2 (2)

[37] Gene expression programming to predict the discharge coefficient in rectangular side weirs [J].

Ebtehaj, Isa ;

Bonakdari, Hossein ;

Zaji, Amir Hossein ;

Azimi, Hamed ;

Sharifi, Ali .

APPLIED SOFT COMPUTING, 2015, 35 :618-628

[38] Prediction of side weir discharge coefficient by support vector machine technique [J].

Azamathulla, Hazi Mohammad ;

Haghiabi, Amir Hamzeh ;

Parsaie, Abbas .

WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY, 2016, 16 (04) :1002-1016

[39] Investigating the process of changing the discharge coefficient of the flow passing through the combined structure of rectangular sharp-crested weir with multiple-gates [J].

Zeinivand, Mehdi ;

Barani, Somayeh ;

Ghomeshi, Mehdi .

AIN SHAMS ENGINEERING JOURNAL, 2024, 15 (02)

[40] Prediction of Discharge Coefficient for Trapezoidal Labyrinth Side Weir Using a Neuro-Fuzzy Approach [J].

Emiroglu, Muhammet Emin ;

Kisi, Ozgur .

WATER RESOURCES MANAGEMENT, 2013, 27 (05) :1473-1488

← 1 2 3 4 5 →