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You are here : eLibrary : IAHR World Congress Proceedings : 32nd Congress - Venice (2007) : THEME A: Engineering and Management of Fresh-water Systems : Empirical formula for propagation distance of flood wave-front in flat inundation area without stru...
Empirical formula for propagation distance of flood wave-front in flat inundation area without structure due to levee breach
Author : Kwang Seok Yoon, Jong-kyu Lee
In the present study, experiments were carried out to investigate propagation distance of a flood wave in a flat inundation area without a structure due to levee breach. Experimental results in this study were compared with Ritter’s solutions and, in addition, empirical solutions suggested by previous researchers were tested. As a result of the experiments, it was found that the propagation velocity of the wave front in the inundation area was influenced strongly by the initial water level in a channel, which was similar to a dam breach flow. New values for coefficients, k and m, in the representative form were suggested using the experimental results. The dimensionless propagation distance L can be written as the power function of dimensionless time T. The coefficients, k and m, were varied with the
dimensionless time T whereas those in Ritter’s solution are constant as 2 and 0, respectively. The variation of the coefficients in the relationship between L and T depends on the water depth in the inundation area. The finding proved that the changing points of L in the slope of relationship between L and T are same to those of relationship between dimensionless maximum water depth in inundation area, hmax and L.
File Size : 252,331 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 32nd Congress - Venice (2007)
Article : THEME A: Engineering and Management of Fresh-water Systems
Date Published : 01/07/2007
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