Numerical analysis has been carried out to analyze seawater flow field and power generation characteristics of the tidal current power generation system for various multi channel shroud systems. Geometrical multi channel arrangement largely affects the flow field characteristics in the shroud system which power generation performance through turbine blade depends on. Sectional averaged velocity in front of the turbine blade which increases more than 2 times compared with channel inlet is much influenced as well as the flow from the rear with curl. And flow variation results in high inlet velocity in horizontal arrangements of multi channels with mechanical output of the turbine. These results are expected to be used as applicable data for the development of the tidal power generation system with shrouds.

ABSTRACT
1. 서 론
2. 수치 해석
    2.1 지배 방정식
    2.2 해석 모델
    2.3 해석방법 및 경계조건
3. 결과 및 토론
    3.1 채널배치에 따른 쉬라우드 내부 유속 변화
    3.2 쉬라우드 형상에 대한 내부 유체의 회전 특성
    3.3 채널구조별 수평축 터빈 블레이드의 기계적 출력
4. 결 론
References

• 한석종(Graduate School of Mechanical Engineering, Wonkwang University) | Seok-Jong Han
• 박다인(Graduate School of Mechanical Engineering, Wonkwang University) | Da-In Bak
• 이상호(Department of Mechanical Engineering, Wonkwang University) | Sang-Ho Lee Corresponding Author