Development of an evaluation method for velocity distribution over cylindrical weirs using doublet concept

作者：Haghiabi Amir Hamzeh; Mohammadzadeh Habili Jahanshir; Parsaie Abbas^*

来源：Flow Measurement and Instrumentation, 2018, 61: 79-83.

DOI：10.1016/j.flowmeasinst.2018.03.008

• Cylindrical weir
• Uniform potential flow
• Doublet
• Velocity distribution
• Discharge coefficient

The cylindrical weir is one of the common types of weirs. It can be used for flow measurement, flow diversion and water level control in open channels. Simple design and large discharge coefficient are the main advantages of cylindrical weirs. In present study, flow around cylindrical weirs is simulated by combination of uniform potential flow with two doublets and crest velocity distribution and discharge coefficient of the weir are then obtained. To evaluate the obtained equations, experiments are conducted on three models of cylindrical weirs. A reasonable good agreement is observed between the measured experimental data and the obtained equations.

• 出版日期2018-6