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Experimental and Theoretical Study on Flood Bore Propagation and Forerunner Generation in Dam-Break Flow by Shugan, I. V.; Chen, Yang-Yih; Hsu, Cheng-Jung is a Physics and Astronomy article available to read on EtoBox.

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Dam-break flows are not only an important practical problem in civil and hydraulic engineering, but also a fundamental problem of fluid mechanics. Due to property damage and the loss of numerous lives, it is critically important to have an exhaustive understanding of the landslide dam-break flow and sedimentation. The main objective of this study is a detailed analysis of the mechanisms of dam-breaking flows through physical and theoretical modeling. Our experimental work was focused on the initial stages of dambreak flow in the water channel, where a thin plate separating water at different levels is impulsively withdrawn in the vertical direction upwards, and as a result, a hydrodynamic bore is formed. The theoretical model of the dam-break flow is based on Benney's shallow water equations. We separately studied the regimes of a breaking and non-breaking bore front. On the hydrodynamic bore, the laws of conservation of mass, momentum, and energy were required in contrast to the classical solutions of Ritter and Stoker, in which the conservation of energy law was not considered at all. The non-breaking flow includes several zones: a shock wave and a shear vorticity flow after it,

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Author

Shugan, I. V.; Chen, Yang-Yih; Hsu, Cheng-Jung

Publisher

Allerton Press, Inc.; Allerton Press; Pleiades Publishing (ISSN 1541-308X)

Published

2020

Language

EN

Field

Physics and Astronomy (Physical Sciences)