Seawater flow and turbine torque in a lab-scale tidal power generation system have been analyzed with CFD method. Its power generation is largely influenced by hydraulic flow characteristics of pressure variation and mechanical turbine torque in the system caused by vertical flow field including tangential rotation. Pressure drop through the turbine was gradually increased with flow rate by seawater level difference, and it depends on the turbine blade and system geometry. And curl was severely varied along the flow direction with more than about 8 times increase through the flow system. There was also turbine torque change with pressure inlet due to the water level. Those predicted results can be widely used as basic concept design data for efficient tidal power generation system development.
목차
ABSTRACT 1. 서론 2. 전산해석 2.1 지배방정식 2.2 해석모델 및 격자시스템 2.3 해석기법 및 경계조건 3. 결과 및 토론 3.1 수위차에 따른 유동분포 3.2 터빈주변에서의 유동 및 출력 특성 4. 결론 References
키워드
조력발전해수 유동장터빈 토크회전유동전산해석Lab-sclae tidal power generationSeawater fieldTurbine torqueRotational flowNumerical analysis
저자
박다인 [ Da-In Bak | Ph. D. Student, Department of Mechanical Engineering, Wonkwang University ]
이상호 [ Sang-Ho Lee | Member, Department of Mechanical Engineering, Wonkwang University ]
Corresponding Author
최혁진 [ Hyuk-Jin Choi | CEO, Coast and Ocean Technology Research Institute ]