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http://dx.doi.org/10.5762/KAIS.2016.17.6.39

Estimation of Modification Factor for Scale Effect of the Front of Flood Wave Propagation  

Jeong, Seok-il (Department of Civil Engineering, Hongik University)
Kim, Soo young (Hydro Science and Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology)
Lee, Seung Oh (Department of Civil Engineering, Hongik University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.17, no.6, 2016 , pp. 39-44 More about this Journal
Abstract
Recently, there has been increasing concern regarding the collapse of hydraulic structures due to abnormal climate conditions. Therefore, numerous studies of the collapse of hydraulic structures have been carried out. In particular, the velocity of the propagation of a flood wave-front is important for predicting the inundation safety and establishing an EAP (Emergency Action Plan). Although many hydraulic tests have been conducted for precise predictions of a flood wave-front, the scale effect from downsizing has not considered. In this study, the relationships between surface tension and the concentration of surfactant, between surface tension and the velocity of flood wave propagation, and between surface tension and the Weber Number were derived through hydraulic tests using a surfactant and image analysis equipment. Based on these relations, the modification factor for the scale effect of the front of flood wave propagation was suggested. The results highlight the necessity of a modification factor when the Weber Number is lower than 12.2, but the scale effect can be ignored when the Weber Number over 12.2.
Keywords
Flood wave propagation; Hydraulic test; Scale effect; Surface tension; Weber number;
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Times Cited By KSCI : 2  (Citation Analysis)
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