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http://dx.doi.org/10.5574/KSOE.2017.31.1.036

Effects of Wave-Current Interactions on 3-D Flow Fields in a River Mouth  

Lee, Woo-Dong (Institute of Marine Industry, Gyeongsang National University)
Jeon, Ho-Seong (Research Group of Green River, Korea Institute of Civil Engineering and Building Technology)
Park, Jong-Ryul (Disaster Information Research Division, National Disaster Management Research Institute)
Hur, Dong-So (Department of Ocean Civil Engineering, Gyeongsang National University)
Publication Information
Journal of Ocean Engineering and Technology / v.31, no.1, 2017 , pp. 36-46 More about this Journal
Abstract
Most of the studies on the hydraulic characteristics of wave-current interaction have used 2-D hydraulic experiments or 2-D numerical simulations. However, it is difficult to understand the wave-current interaction found in actual estuaries using these. Therefore, a numerical water tank was constructed in this study to perform simulations involving a 3-D river mouth. The result showed a change in the water surface at the river mouth from the wave-current interaction. With an increase in the ratio ($V_c/C_i$) between the river current and wave celerity, the wave height and mean water level of the river increased at the wave and current meeting point. A higher $V_c/C_i$ caused a stronger wave-current interaction and increased the turbulence kinetic energy. Thus, the wave height attenuation became larger by the wave-current interaction with a higher $V_c/C_i$. In addition, it was possible to understand the flow characteristics in the vicinity of the river mouth as a result of the wave-current interaction using the mean flow and mean time-averaged velocity at the mid-cross section of river.
Keywords
River mouth; Wave-current interaction; Turbulence kinetic energy; Wave deformation; 3-D Navier-Stokes solver;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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