New Theoretical solution of stage-discharge relationship for slit weirs

Aydın, İsmail
In this paper, the flow-process of a slit weir was analyzed on the basis of a theorem of dimensional analysis and incomplete self-similarity theory. The theoretically deduced stage-discharge formula then was calibrated using experimental data obtained for a ratio between the weir and the channel width, ranging from 0.05 to 0.25. The deduced stage-discharge relationship allowed measuring discharge values characterized by errors that, for 98% of the measured values, were less than or equal to ±5%. The performance of the proposed theoretical stage-discharge formula also was improved by introducing the Reynolds number (for 98.5% of the measured values the error was less than or equal to ±5%, and the error for 74% of the measured values was less than or equal to ±2%)
Journal of Irrigation and Drainage Engineering


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Citation Formats
V. FERRO and İ. Aydın, “New Theoretical solution of stage-discharge relationship for slit weirs,” Journal of Irrigation and Drainage Engineering, pp. 0–0, 2018, Accessed: 00, 2020. [Online]. Available: