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http://dx.doi.org/10.9726/kspse.2017.21.2.048

Numerical Analysis on Velocity Fields around Seabed Tiller for the Improvement of Seabed Soil  

Kim, Jang-Kweon (Dept. of Power System Engineering, Kunsan National University)
Oh, Seok-Hyung (School of Mechanical Engineering, Kunsan National University)
Kim, Jong-Beom (Korea Fisheries Infrastructure Promotion Association)
Chung, Sang-Ok (Tidal Flat Research Center-NIFS)
Publication Information
Journal of Power System Engineering / v.21, no.2, 2017 , pp. 48-56 More about this Journal
Abstract
The steady-state, incompressible and three-dimensional numerical analysis was carried out to evaluate the velocity fields around the seabed tiller used for the improvement of the seabed soil and the pulling force and buoyancy generated by driving the seabed tiller. The turbulence model used in this study is a realizable $k-{\varepsilon}$ well known to be excellent for predicting the performance of the flow separation and recirculation flow as well as the boundary layer with rotation and strong back pressure gradient. As a results, a typical vortex pair appears near the adjacent rotor vane tip. When the current is stopped, there is no force when pulling the seabed tiller, but when the current flows at 1.2 knots, the force acts on the downstream side and the pulling force is much greater. In stationary currents, the buoyancy of the seabed tiller acts more strongly towards the seabed as the number of rotations of the rotor increases, but acts more strongly toward the sea surface at 1.2 knots of current.
Keywords
Seabed Tiller; Numerical Analysis; Rotor; Seabed Soil; Vane; Vector; Velocity Field;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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