SPIV를 이용한 조류발전터빈의 후류유동 계측 및 상호상관면 중첩법을 이용한 SPIV 해석 알고리즘 개발
SPIV measurement of wake flow in current turbine & development of SPIV algorithm using reiterated method of cross correlation plane

DC Field Value Language
dc.contributor.advisor이신형 교수님-
dc.description학위논문 (석사)-- 서울대학교 대학원 : 조선해양공학과, 2014. 8. 이신형.-
dc.description.abstractInfluences of efficiency of current turbine on wake field are investigated by towed underwater Stereoscopic Particle Image Velocimetry (SPIV) system. The TSR conditions for wake measurement were chosen based on the torque coefficient and flow filed in various downstream locations are measured. The time averaged results showed that the wake flow become more uniform and the TKE distribution is more concentrated around tip area of the turbine wake as the torque coefficient increase. The measurement of five hole Pitot-tubes were made and exclusive software is developed to analysis the data of 5hole pitot-tube experiment to compared with time-averaged SPIV results at the highest efficiency value of TSR condition. Also angular and radial velocity components were calculated. The results showed that the angular velocity is reversed from the out side of border area of the turbine wake. Also relatively high angular velocity was observed near the wake core and it could be negligible as getting closer to the turbine tip. In addition, efficiency of the turbine and the fluctuation of the velocity has a strong relationship due to the development of strong tip
vortices, as observed in phase-averaged velocity fields results. Also to get the high resolution of PIV results, the reiterated cross correlation method is invented and used to developed the PIV data analysis program which can give high resolution PIV results even with one pair of raw data of pictures
dc.description.tableofcontents1. 서론
1.1 조류발전 터빈
1.2 조류발전 터빈의 후류 유동 계측 필요성
1.3 선행 연구
1.4 문제의 정의

2. 실험 대상 및 실험장치 구성
2.1 터빈의 형상
2.2 모형시험 계측 장비
2.2.1 POW 장비
2.2.2 예인전차
2.2.3 SPIV 시스템
2.2.4 5공 피토관 시스템

3. 터빈 후류유동 계측 설정
3.1 SPIV 계측 시스템 설정
3.2 5공 피토관 계측 시스템 설정

4. PIV의 유동 계측 원리
5. 5공 피토관 유동 계측 원리

6. 실험결과 및 PIV 상호상관면 중첩 기법의 적용
6.1 추력 및 토크
6.2 SPIV 후류유동 계측 결과
6.2.1 Time average 후류유동 해석 결과
6.2.2 Phase average 후류유동 해석 결과
6.3 PIV상호상관면 중첩 알고리즘 및 SPIV 데이터 해석 적용결과
6.4 5공 피토관 후류유동 계측결과와의 비교

7. 결론

8. 참고문헌
dc.format.extent6965247 bytes-
dc.publisher서울대학교 대학원-
dc.subjectSPIV 해석 알고리즘 개발 조류발전터빈-
dc.subjectCurrent turbine-
dc.subjectStereoscopic Particle Image Velocimetry(SPIV)-
dc.subjectCross correlation-
dc.subjectreiterated method-
dc.titleSPIV를 이용한 조류발전터빈의 후류유동 계측 및 상호상관면 중첩법을 이용한 SPIV 해석 알고리즘 개발-
dc.title.alternativeSPIV measurement of wake flow in current turbine & development of SPIV algorithm using reiterated method of cross correlation plane-
dc.contributor.AlternativeAuthorSungTaek Park-
dc.contributor.affiliation공과대학 조선해양공학과-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Naval Architecture and Ocean Engineering (조선해양공학과)Theses (Master's Degree_조선해양공학과)
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