Experimental investigation of the effect of contracted section at downstream of the rectangular channel on energy dissipation

Authors : Rasoul Daneshfaraz, Behruz Zirei, Parisa Ebadzadeh, Hamidreza Abbaszadeh, Seyed Bahman Mousavi

Pages : 1-6

View : 51 | Download : 67

Publication Date : 2024-07-03

Article Type : Research Paper

Abstract :This study investigated the hydraulic parameters of rectangular flumes with contraction. Experimental studies were done. The contraction section was installed downstream. Different flow rates: 300 to 900 liters per minute were performed on models. The classic hydraulic jump was compared with the contracted section jump. Results showed that installing the contraction section affected the flow depth downstream. An increase in flow depth downstream caused an increase in energy dissipation. An increase in flow rate to 900 liters per minute, caused energy dissipation to be higher than 300 liters per minute. Different sections were studied, and the highest energy dissipation occurred in the distance between sections A and C. (A in the upstream and C in the contraction section). Therefore, with the increase in Froude number, the energy dissipation increases in the contraction section.
Keywords : Rectangular channel, Hydraulic jump, Energy dissipation, Flow depth, Discharge