조류발전시스템의 쉬라우드 내 해수유동특성
Seawater flow characteristics in tidal current power generation system with shroud
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조회
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다운로드
7
인용
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참고문헌
키워드
초록
Numerical simulation has been carried out to analyze seawater flow characteristics for shroud geometry variations with tidal current generation turbine. Seawater flow field characteristics in the turbine system are largely influenced by the shroud geometry. The vortex flow area in the diffuser part of the shroud gradually grows with the increase of shroud angle, but its recirculation velocity gets smaller. The centerline velocity of shroud increases with the length of cylinder part when diffuser part length and angle are constant( ,) for the cylinder-diffuser type shroud system. Seawater velocity on the tip of turbine blade is pretty high, and as radial distance increases from the turbine axis, there is more gap between the fluid velocity isolines. These results in this study will be applicable for optimal design of tidal current generation system.
Abstract
Numerical simulation has been carried out to analyze seawater flow characteristics for shroud geometry variations with tidal current generation turbine. Seawater flow field characteristics in the turbine system are largely influenced by the shroud geometry. The vortex flow area in the diffuser part of the shroud gradually grows with the increase of shroud angle, but its recirculation velocity gets smaller. The centerline velocity of shroud increases with the length of cylinder part when diffuser part length and angle are constant( ,) for the cylinder-diffuser type shroud system. Seawater velocity on the tip of turbine blade is pretty high, and as radial distance increases from the turbine axis, there is more gap between the fluid velocity isolines. These results in this study will be applicable for optimal design of tidal current generation system.
참고문헌 (8)
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- Raj, U.I., "Development of 3D CFD Model of a Shrouded Wind Turbine", 10th National Conference on Technological Trends (NCTT09), pp.114~118 (2009)
- Yuji, O., "A Shrouded Wind Turbine Generating High Output Power with Wind-lens Technology", Energies, 3, pp.634~649 (2010)