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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.3
- 수록면
- 20 - 28 (9page)
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초록· 키워드
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An experimental assessment has been made of the drag reducing efficiency of the outer-layer vertical blades, which were first devised by Hutchins1). The drag reduction efficiency of the blades was reported to reach as much as 30%. However, the drag reduction efficiency was quantified only in terms of the reduction in the local skin-friction coefficient. In the present study, a series of drag force measurements in towing tank has been performed toward the assessments of the total drag reduction efficiency of the outer-layer vertical blades. A maximum 9.6% of reduction of total drag was achieved. The scale of blade geometry is found to be weakly correlated with outer variable of boundary layer. In addition, detailed flow field measurements have been performed using 2-D time resolved PIV with a view to enabling the identification of drag reduction mechanism.
목차
Abstract
1. 서론
2. 예인수조에서의 총저항 저감 확인
3. 마찰저항 저감기구의 PIV 관측
4.결론
후기
참고문헌
참고문헌 (10)
참고문헌 신청
1. [학위논문] - Hutchins, N. / 2003 / An investigation of larger-scale coherent structures in fully developed turbulent boundary layers / 박사 / University of Nottingham
2. [학술지(정기간행물)] - Corbett, J. J / 2003 / Updated emissions from ocean shipping / J. Geophysical Research 108 (D20) : ACH 9-1 ~ ACH 9.13
3. [학술지(정기간행물)] - Walsh, M. / 1980 / Drag characteristics of V-groove and transverse curvature riblets, In: Viscous Flow Drag Reduction (ed. G. R. Hough) / Progress in Astronautics and Aeronautics 72
4. [학술지(정기간행물)] - Beckert, D. W / 1989 / The viscous flow on surfaces with longitudinal ribs / J. Fluid Mechanics 206 : 105 ~ 129
5. [학술대회논문] - Choi, K. S. / 1997 / Turbulent drag reduction using compliant surfaces / Proc. Royal Soc. London ser. A : 2229 ~ 2240
2. [학술지(정기간행물)] - Corbett, J. J / 2003 / Updated emissions from ocean shipping / J. Geophysical Research 108 (D20) : ACH 9-1 ~ ACH 9.13
3. [학술지(정기간행물)] - Walsh, M. / 1980 / Drag characteristics of V-groove and transverse curvature riblets, In: Viscous Flow Drag Reduction (ed. G. R. Hough) / Progress in Astronautics and Aeronautics 72
4. [학술지(정기간행물)] - Beckert, D. W / 1989 / The viscous flow on surfaces with longitudinal ribs / J. Fluid Mechanics 206 : 105 ~ 129
5. [학술대회논문] - Choi, K. S. / 1997 / Turbulent drag reduction using compliant surfaces / Proc. Royal Soc. London ser. A : 2229 ~ 2240
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UCI(KEPA) : I410-ECN-0101-2012-505-004225380