Dams are enormous constructions that hold a significant amount of water. When this stored water is released for irrigation or any other purpose, the rushing water gains a lot of energy, which could put the dam or downstream structures in jeopardy. To avoid such a catastrophic collapse Stilling basins are built to limit the extra energy retained by high-velocity flow on the downstream face of the conduit's outflow, so that flow beyond the basin does not jeopardise the downstream channel's bed and banks. This article describes an experimental inquiry that resulted in the construction of a new stilling basin design with various appurtenances. The USBR VI stilling basin model was changed based on trial results to make the new stilling basin model more effective and cost-efficient. Three adjustments, resulting in three new models, were compared to the USBR VI stilling basin model proposed for pipe outlets for Froude numbers of Fr = 1.85, 2.85, and 3.85. The novel models were investigated by using an inverted T-shaped splitter block and preserving the rest of the stilling basin geometry as indicated by USBR VI stilling basin. A performance index was used to assess the basin's performance (PI). After twelve test runs, it was discovered that inserting the splitter block while keeping the same impact wall and end sill improved the performance of the stilling basin, and the length of the newly studied basin was reduced by 29% for given flow conditions when compared to the USBR VI stilling basin.
Author(S) Details
H. L. Tiwari
Deptartment of Civil Engg., Maulana Azad National Institute of Technology, Bhopal, India.
Kamal Singh
Deptartment of Civil Engg., Maulana Azad National Institute of Technology, Bhopal, India.
View Book:- https://stm.bookpi.org/NAER-V15/article/view/4031
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