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Experimental Study of Shape and Pressure Characteristics of Solitary Wave generated by Sluice Gate for Various Conditions
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 Title & Authors
Experimental Study of Shape and Pressure Characteristics of Solitary Wave generated by Sluice Gate for Various Conditions
Cho, Jae Nam; Kim, Dong Hyun; Lee, Seung Oh;
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Recently, coastal erosion has been widely in progress and the erosion level becomes also serious in the world wide, espeically in East Sea in Korea. Since it would threaten the life, economics and security risk, it is necessary to much comprehend the reason why coastal erosion has occurred according to the geographical characteristics. Meanwhile, analysis about hydrodynamics of the solitary wave such as tunami in swash zone is needed for the best management practice of coastal erosion. Solitary wave is nonlinear wave and can be reproduced in the laboratoy scale by openning suddenly a sluice gate with water head difference, of which methodology was found in the literature, since it could be simply determined by a significant wave height. Thus, in this sutdy the generation of solitary wave was experimentalized using the sluice gate. Experimental conditions were classified by angles of a beach slope, a water level in a beach slope and a difference of water level between in a headtank and a channel bed. Two kinds of dimensionless analyses based from experimental results in this study were presented; the first analysis indicates nondimensionalization between the wave height and the water level in a beach slope in order to investigate characteristics of solitary wave approaching the beach. The second shows the other nondimensionalization between dynamic pressure and static pressure on a beach slope to investigate the relationship between wave breaking and wave pressure. Under the same conditions as laboratory experiments, the numerical results computed with a SWAN model embedded in FLOW 3D were compared in terms of wave height, and pressure on the beach slope, which shows good agreement with each other. Overall results from this study could provide fundamental hydraulic data for the reliabile verification of numerical simulation results about coastal erosion in swash zone caused by solitary waves.
solitary wave;sluice gate;water depth;coastal erosion;
 Cited by
D. G. Goring, "Tsunamis-the Proagation of Long Waves Onto a Shelf", California Institute of Technology, 1978.

S. Tonkin et al., "Tsunami Scour Around a Cylinder", Journal of Fluid Mechanics 496, pp.165-192, 2003. crossref(new window)

M. A. Foda, "Role of Wave Pressure in Bedload Sediment Transport", Journal of Waterway, Port, Coastal, Ocean Engineering, Vol. 129, No. 6, pp. 243-249, 2003. crossref(new window)

H. Yeh, F. Kato and S. Sato, "Tsunami Scour Mechanisms Around a Cylinder", Tsunami Research at the End of a Critical Decade, pp. 33-46, 2001.

D. H. Peregrine, "Calculations of the Development of an Undular Bore", Journal of Fluid Mechanics, Vol. 25, Issue 2, pp. 299-320, 1966. crossref(new window)

G. Carrier and H. Greenspan, "Water Waves of Finite Amplitude on a Sloping Beach", Journal of Fluid Mechanics, pp. 97-109, 1958.

C. E. Synolakis, "The Run-up of Solitary Waves", Journal of Fluid Mechanics, pp. 523-545, 1987.

H. Chanson, "An Experimental Study of Tsunami Runup on Dry and Wet Horizontal Coastlines", Science of Tsunami Hazards, Vol. 20, No. 5, pp. 278-293, 2003.

S. T. Grilli et al., "Numerical Modeling And Experiments For Solitary Wave Shoaling And Breaking Over a Sloping Beach", In The Fourteenth International Offshore and Polar Engineering Conference, International Society of Offshore and Polar Engineers, 2004.

Flow Science, "Flow-3D User's Manual", Los Alamos, 2003.