Study on optimization measures for water level fluctuation of large water conveyance aqueducts
Jian Chen, Yangyang Tian, Huijie Zhang, Hongling Shi, Auroop R Ganguly, Auroop R Ganguly, Auroop R Ganguly, Auroop R Ganguly, Auroop R Ganguly
TL;DR
This study explores how to reduce water level fluctuations in aqueducts using optimized tail pier designs, improving stability and efficiency.
Contribution
The study introduces a three-dimensional fluid dynamics model to optimize aqueduct structures and demonstrates the effectiveness of conical tail piers.
Findings
A conical tail pier outperforms a platform-shaped tail pier in reducing water surface fluctuations and turbulent energy dissipation.
Shorter conical tail piers (e.g., 15 meters) result in lower head loss compared to longer ones (e.g., 35 meters).
Optimized tail pier structures maintain a stable Froude number and improve flow stability.
Abstract
This paper addresses the issue of water surface fluctuations in aqueducts caused by the Karman Vortex Street phenomenon, which significantly impacts the structural stability and water delivery efficiency of the aqueducts. Based upon existing research findings, a representative three-dimensional fluid dynamics model is developed to optimize the transition section and tail pier structure of the aqueduct, with the objective of reducing water level fluctuations and improving hydraulic stability.The research focuses on improving the symmetry of both the transition section and the tail pier, optimizing the tail pier structure, and analyzing its wave attenuation effect. The experimental results demonstrate that a conical tail pier performs better than a platform-shaped tail pier in eliminating water surface fluctuations, significantly reducing turbulent energy dissipation at the exit…
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Taxonomy
TopicsFluid Dynamics and Vibration Analysis · Hydraulic flow and structures · Fluid Dynamics and Turbulent Flows