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http://dx.doi.org/10.3741/JKWRA.2008.41.12.1187

3D Modeling of Turbid Density Flow Induced into Daecheong Reservoir with ELCOM-CAEDYM  

Chung, Se-Woong (Dept. of Env. Engrg. Chungbuk National University)
Lee, Heung-Soo (Dept. of Env. Engrg. Chungbuk National University)
Ryoo, Jae-Il (Dept. of Env. Engrg. Chungbuk National University)
Ryu, In-Gu (Dept. of Env. Engrg. Chungbuk National University)
Oh, Dong-Geun (Dept. of Env. Engrg. Chungbuk National University)
Publication Information
Journal of Korea Water Resources Association / v.41, no.12, 2008 , pp. 1187-1198 More about this Journal
Abstract
Many reservoirs in Korea and their downstream environments are under increased pressure for water utilization and ecosystem management from longer discharge of turbid flood runoff compared to a natural river system. Turbidity($C_T$) is an indirect measurement of water 'cloudiness' and has been widely used as an important indicator of water quality and environmental "health". However, $C_T$ modeling studies have been rare due to lack of experimental data that are necessary for model validation. The objective of this study is to validate a coupled three-dimensional(3D) hydrodynamic and particle dynamics model (ELCOM-CAEDYM) for the simulation of turbid density flows in stratified Daecheong Reservoir using extensive field data. Three different groups of suspended solids (SS) classified by the particle size were used as model state variables, and their site-specific SS-$C_T$ relationships were used for the conversion between field measurements ($C_T$) and state variables (SS). The simulation results were validated by comparing vertical profiles of temperature and turbidity measured at monitoring stations of Haenam(R3) and Dam(R4) in 2004. The model showed good performance in reproducing the reservoir thermal structure and propagation of stream density flow, and the magnitude and distribution of turbidity in the reservoir were consistent with the field data. The 3D model and turbidity modeling framework suggested in this study can be used as a supportive tool for the best management of turbidity flow in other reservoirs that have similar turbidity problems.
Keywords
Turbidity modeling; Density current; Daecheong reservoir; ELCOM-CAEDYM;
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Times Cited By KSCI : 4  (Citation Analysis)
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