Experimental Modeling of Dam Break Flood Wave Depth Propagation on A Fixed Bed.

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Humna Hamid
Dr.Mujahid Khan
Maria Mehmood
Dr. Fayaz Ahmed

Abstract

Generally countries are considered to be developed based on their advanced technological infrastructure. One of the necessary infrastructure requirements for any a developed country is the construction of dams to generate power and providing water for irrigation purposes. Despite their necessity, however they pose a great risk to both human lives and infrastructure present in their vicinity e.g. roads, bridges, residential areas etc. If a dam collapsed in an area close to human population it could cause great havoc and economical loss. To diminish these hazards actions are being taken by studying different modes of dam failures and their subsequent effects downstream of the dam collapse. Numerical models are being made to simulate breaching of dams and effects downstream. This study focuses on the effects of a flood wave propagating on a fixed bed at the downstream side when the downstream side is open without presenting any obstruction to the flow. It is observed that the flood wave diminishes in velocity and height with increase in time. For downstream open condition the flood wave attains maximum height in1 to 4 sec and maximum velocity within 1 to 6 sec, whereas time taken for the wave to completely dissipate is 42 sec.
Key words: Dams; downstream open; flood wave; height; model; velocity

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CIVIL ENGINEERING