Investigating a new approach to enhance the discharge capacity of labyrinth weirs
نویسندگان
چکیده
Abstract Climate change has caused the inefficient operation of a significant number old weirs to pass large discharges. Therefore, this study aims increase discharge capacity labyrinth weir. A new approach was proposed by modifying weir structure. The data obtained from quarter-round crest and different sidewall angles ranging 8 35°. conventional used for comparison. results showed that percentage notches area sidewalls (An/Aw) does not exceed 8%. Also, notches' length total (ΔL/Lc) 32%. notch depth (ΔP/P) 30%. other parameters are kept constant. These dimensionless terms provided maximum compound coefficient 0.74. initially increased at low water head ratios decreased higher values ratios. regression empirical equations were generated. in efficiency 10% angle 6° when compared weirs. improvement 18.8% 8°.
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ژورنال
عنوان ژورنال: Journal of Hydroinformatics
سال: 2023
ISSN: ['1465-1734', '1464-7141']
DOI: https://doi.org/10.2166/hydro.2023.097