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http://dx.doi.org/10.5762/KAIS.2020.21.12.87

A Study on the One-Way Distance in the Longitudinal Section Using Probabilistic Theory  

Kim, Seong-Ryul (Dept. of Civil and Environmental Engineering, Pusan National University)
Moon, Ji-Hyun (Dept. of Civil and Environmental Engineering, Pusan National University)
Jeon, Hae-Sung (Dept. of Civil and Environmental Engineering, Pusan National University)
Sue, Jong-Chal (Dept. of Civil and Environmental Engineering, Pusan National University)
Choo, Yeon-Moon (Research Institute of Industrial Technology, Pusan National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.12, 2020 , pp. 87-96 More about this Journal
Abstract
To use a hydraulic structure effectively, the velocity of a river should be known in detail. In reality, velocity measurements are not conducted sufficiently because of their high cost. The formulae to yield the flux and velocity of the river are commonly called the Manning and Chezy formulae, which are empirical equations applied to uniform flow. This study is based on Chiu (1987)'s paper using entropy theory to solve the limits of the existing velocity formula and distribution and suggests the velocity and distance formula derived from information entropy. The data of a channel having records of a spot's velocity was used to verify the derived formula's utility and showed R2 values of distance and velocity of 0.9993 and 0.8051~0.9483, respectively. The travel distance and velocity of a moving spot following the streamflow were calculated using some flow information, which solves the difficulty in frequent flood measurements when it is needed. This can be used to make a longitudinal section of a river composed of a horizontal distance and elevation. Moreover, GIS makes it possible to obtain accurate information, such as the characteristics of a river. The connection with flow information and GIS model can be used as alarming and expecting flood systems.
Keywords
Velocity; Shannon Entropy; Open Channel; Natural River; Moving Distance;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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