Effects of upstream and downstream ramp on flow characteristics over a cylindrical weir

doi:10.6703/IJASE.202306_20(2).007

Chaoyang University of Technology Institutional Repository > 理工學院 > 理工學院 > 國際應用科學與工程學刊 > Item 310901800/41762

Please use this identifier to cite or link to this item: http://ir.lib.cyut.edu.tw:8080/handle/310901800/41762

Title:	Effects of upstream and downstream ramp on flow characteristics over a cylindrical weir
Authors:	Mohammad, Akram Saadi AL-Dabbagh;Shekho, Abdullah Ahmed;Yuce, Mehmet Ishak;Abdulrazzaq, Dheyaa Ghanim
Contributors:	理工學院;Northern Technical University, Mosul Technical Institute, Department of Water Resources Techniques, Mosul, Iraq;Gaziantep University, Civil Engineering Department, Gaziantep, Turkey
Keywords:	Cylindrical weir;Overflow;Upstream ramp;Downstream ramp discharge coefficient;CFD.
Date:	2023-06
Issue Date:	2023-06-14 11:44:14 (UTC+8)
Publisher:	朝陽科技大學理工學院
Abstract:	Cylindrical weirs are one of the most commonly employed hydraulic structures to measure flow, compare to other types of the same width they pass larger discharge. This paper presents an experimental work together with a CFD simulation to study the effects of the geometric characteristics of a cylindrical weir and a ramp placed upstream or downstream of the same weir on the discharge coefficient. Three different weir diameters and three ramp angles under three different discharges were utilized. The results show that the geometric characteristics represented by the diameter of the weir affects the discharge coefficient when there is no ramp. The discharge coefficient was observed to decrease as the slope of the upstream ramp was increased, however as the slope of the downstream ramp was increased the discharge coefficient was noted to increase. A mathematical relationship was developed in order to calculate the discharge of flow passes over the cylindrical weir depending on its diameter.
Relation:	International Journal of Applied Science and Engineering 20(2), 2022190 國際應用科學與工程學刊 20(2), 2022190
Appears in Collections:	[理工學院] 國際應用科學與工程學刊

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