Dam Break Wave Propagation on a Non- Erodible Bed – Comparison of Experimental and Numerical Results
Journal: International Journal of Emerging Trends in Engineering Research (IJETER) (Vol.9, No. 6)Publication Date: 2021-06-11
Authors : Humna Hamid Fayaz Ahmad Khan Mujahid Khan Muhammad Ajmal Maria Mahmood Muhammad Sagheer Aslam Mohammad Tufail;
Page : 733-740
Keywords : ;
Abstract
Dams are vital for production of electricity, storage of water and irrigation purposes but pose a serious risk to the community, if breached. The downstream flood wave propagation, resulting from failure of a dam can subject the population and infrastructure to considerable damage. No matter how low the chances of failure, the cost of failure makes it a higher risk. Mitigation of such risks requires better understanding of the hazard that a dam may pose in case of failure. This study focuses on the effects of flood wave propagation on a fixed bed on the downstream side resulting from sudden dam break. Two conditions are simulated: 1. when the downstream side is open, 2. when the downstream side is closed. It is observed that the flood wave diminishes in velocity and height with increase in time for both cases. For downstream open condition, the flood wave attains maximum height in 2 to 4 sec and maximum velocity within 2 to 5 sec. For downstream closed condition, the flood wave attains maximum height within 5to 10 sec and maximum velocity within 3 to 5 sec. The results obtained from the two-dimensional shallow water equation based numerical model are in close agreementwith the experimental results.
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