Discharge Coefficient of Type-C Piano Key Side Weir in 30-Degree Sector of a Channel Having Longitudinal Curvature

Mehri, Yaser; Soltani, Jaber; Saneie, Mojtaba; Rostami, Mohammad

doi:10.22092/idser.2018.116134.1271

Document Type : Original Article

Authors

¹ Ph. D. Student, Irrigation and Drainage Engineering Department, Abouraihan Campus, University of Tehran

² Assistant Professor, Irrigation and Drainage Engineering Department, Abouraihan Campus, University of Tehran

³ Associate Professor, Irrigation and Drainage Engineering Department, Abouraihan Campus, University of Tehran

⁴ Assistant Professor, Water Structures Engineering , Soil Conservation and Watershed Management Research Institute

https://doi.org/10.22092/idser.2018.116134.1271

Abstract

Piano key weir has a higher effective length in comparison with other weir types. Piano key weir Lateral weirs can be employed in irrigation and drainage networks, flood control systems and water & waste-water systems instead of common side weirs. Keeping in view that discharge coefficient evaluation of the weirs is mandatory in channels having longitudinal curvatures, in this investigation; discharge coefficient of a Type-C piano key weir was studied in 30-degree sector of a channel having longitudinal curvature. During course of investigating 12 piano key weirs were investigated by performing 133 experiments on discharge flow. Influential parameters were defined using dimensional analysis and then their impact was analyzed. An experimental equation was developed for discharge coefficient calculation in the conditions under consideration. The accuracy of the equation was acceptable by having a correlation coefficient of 0.916 and mean absolute error of 0.089. Therefore, it can be suggested that the equation can be used for discharge coefficient estimation in design of piano key side weir.

Keywords

References

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Irrigation and Drainage Structures Engineering Research

Discharge Coefficient of Type-C Piano Key Side Weir in 30-Degree Sector of a Channel Having Longitudinal Curvature

References

References

Volume 19, Issue 72 - Serial Number 72
November 2018
Pages 133-148

Discharge Coefficient of Type-C Piano Key Side Weir in 30-Degree Sector of a Channel Having Longitudinal Curvature

References

References

Volume 19, Issue 72 - Serial Number 72November 2018Pages 133-148

Volume 19, Issue 72 - Serial Number 72
November 2018
Pages 133-148