PIV를 이용한 회류수조의 유속 분포 교정에 관한 연구
Calibration of Water Velocity Profile in Circular Water Channel Using Particle Image Velocimetry
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초록
This experimental study was performed to find rpms of the impeller and the surface flow accelerator to make a uniform velocity vertical distribution in the circular water channel. PIV technique was employed to measure the water velocity profiles into the water depth from the free surface. The number of instantaneous velocity profiles was decomposed into mean and turbulence velocity components, and the distribution of velocity fluctuation and turbulence intensity were computed for each experimental condition. From these results, the velocity uniformity was quantitatively determined to present the flow quality in the measuring section of the circular water channel. It has been shown that the proper operation of the surface flow accelerator would make the uniform velocity profiles and reduce the velocity fluctuation near the free surface.
Abstract
This experimental study was performed to find rpms of the impeller and the surface flow accelerator to make a uniform velocity vertical distribution in the circular water channel. PIV technique was employed to measure the water velocity profiles into the water depth from the free surface. The number of instantaneous velocity profiles was decomposed into mean and turbulence velocity components, and the distribution of velocity fluctuation and turbulence intensity were computed for each experimental condition. From these results, the velocity uniformity was quantitatively determined to present the flow quality in the measuring section of the circular water channel. It has been shown that the proper operation of the surface flow accelerator would make the uniform velocity profiles and reduce the velocity fluctuation near the free surface.
참고문헌 (7)
- 김성민, "평판 가까이에 놓인 타원형 실린더 주 위 유동에 관한 연구", 대한기계학회논문집, 20(8), pp.2637~2649 (1996)
- 나정헌, "PIV기법을 이용한 편향흐름 발생영역 규명", 한국해양공학회지, 13(1), pp.105~112 (1999)
- 노기덕, "PIV를 이용한 직렬배열에서 2원주 주위의 유동장 특성 연구", 한국마린엔지니어링학회지, 31(2), pp.159~165 (2007), 한국마린엔지니어링학회
- 박건선, "piv를 사용한 2차원 원형 실린더 주위의 유동해석", 한국해양공학회지, 18(3), pp.1~7 (2004), 한국해양공학회
- 임영배, "해양공학용 소형 회류수조 설계 및 성능분석", 한국해양공학회 춘계학술대회 논문집, pp.198~202 (2003)
- 최은수, "레이져 유속계를 이용한 회류수 조의 난류유동 측정", 대한조선학회, 26(3), pp.1~8 (1989)
- 회류수조를 이용한 KCS 모형선의 저항시험 보고서, "KTTC 회류수조분과", ~ (2006)