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http://dx.doi.org/10.9765/KSCOE.2020.32.1.48

Analysis of Flow Field Characteristics Inside a Shroud for Rotor Positions  

Bak, Da In (Department of Mechanical Engineering, Wonkwang University)
Han, Seok Jong (Department of Mechanical Engineering, Wonkwang University)
Lee, Uk Jae (Department of Civil and Environmental Engineering, Wonkwang University)
Lee, Sang Ho (Department of Mechanical Engineering, Wonkwang University)
Choi, Hyuk Jin (Coast and Ocean Technology Research Institute)
Im, Jong Seok (Hwajin Enterprise)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.32, no.1, 2020 , pp. 48-54 More about this Journal
Abstract
Numerical analysis was carried out to analyze the flow fields and mechanical output of a rotor for various positions and inlet flow rates in a shroud, and it was compared with experimental data. Rotor and seawater current largely affects the flow field characteristics in the shroud system. Especially the mechanical output of the rotor increased with axial position near the center of the cylinder, and it gradually decreased close to the entrance and exit. Also, the rotor output increased with the inlet velocity. Axial and angular momentum of flow along the cylinder region rapidly increased and reached a peak, and then decreased as it passed through the rotor, while there was no significant change in the cylinder region. It is expected that these results can be used as applicable design data for the development of the tidal power generation system.
Keywords
tidal current power generation; shroud; rotor; mechanical output; velocity variation;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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