Analysis of Effects of Rough Strip Energy Dissipator on Hydraulic Property of Bend Flow. (7th October 2022)

• Record Type: Journal Article
• Authors: Zhang, Honghong; Mu, Zhenwei; Fan, Fan; Li, Fanqi
• Other Names: Wang Zhiyuan Academic Editor.
• Is Part Of: Geofluids. Volume 2022(2022)
• Publication Date: 2022-10-07
• Subjects: Hydrogeology -- Periodicals; Sedimentary basins -- Periodicals; Fluids -- Migration -- Periodicals; Groundwater flow -- Periodicals; Geothermal resources -- Periodicals; Fluid dynamics -- Periodicals; Earth -- Crust -- Periodicals; 551.49
• DOI: 10.1155/2022/4260540
• Languages: English
• ISSNs: 1468-8115

Abstract

Abstract : Installing rough strip energy dissipators (R-SEDs) at the bottom of curved spillways can facilitate energy dissipation and flow stabilization. In this study, the effects of R-SEDs set at the bottom of a 60° bend in a spillway were examined. This spillway had a large width-to-depth ratio (B / H > 5 ). Based on physical model tests, the distribution of hydraulic properties of the spillway under different runs was studied and analyzed. The results show that the R-SEDs effectively improved the flow pattern in the bend. The R-SEDs reduced the average dimensionless flow velocity by about 37.9% by increasing the roughness at the bottom of the bend. The energy dissipation rate of the R-SED decreased with an increase in discharge flow rate and ranged between 30% and 50%. These indicate that it is feasible to apply the R-SEDs to 60° bends of spillways with a large width-to-depth ratio at low-flow runs (the tested discharge flow rate = 15 L / s ). These results will provide a theoretical basis for the R-SED design of similar curved spillways.