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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
- 2009.1
- 수록면
- 34 - 45 (12page)
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초록· 키워드
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In this study, the hydrodynamic coefficients were measured using various nettings to analyze the change of drag coefficients and lift coefficients as a basic study for deriving hydrodynamic coefficients. The data on hydrodynamic force obtained from the flume tank tests were used to compare and analyze the hydrodynamic coefficients based on Reynolds number. Standardized hydrodynamic coefficients were then assumed during the analysis procedures. The hydrodynamic coefficients were measured using the 9 kinds of nettings in which had the same total projected area with different diameters and mesh-grouping ratio. These different netting systems : mesh-grouping ratio. The results of the test of nettings were as follows; First, the drag coefficients of nettings increased when the higher attack angles applied, and decreased with the increased flow speed and netting twine diameter. Second, the lift coefficients of nettings showed the increased values until the attack angle 30 degree, but decreased for the attack angle over 40 degree. Third, the hydrodynamic coefficients of netting decreased as the Reynolds number increased, and reach at slightly states in the highest numbers. Fourth, the hydrodynamic coefficients were derived from a functional formula considering attack angles and Reynolds number, and presented in the three dimensional space.
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등록된 정보가 없습니다.
참고문헌 (14)
참고문헌 신청
Aarsnes,J.V. / 1990 / Current forces on cage, net deflection. In: Engineering for Offshore Fish Farming / Thomas Telford, London : 137 ~ 152
Bessonneau,J.S. / 1998 / Study of the dynamics of submerged supple nets(application to trawls) / Ocean Engineering 24 (1) : 563 ~ 583
Cha,B.J. / 2002 / Dynamic simulation of a midwater trawl system‘s behavior / Fisheries science 68 : 1865 ~ 1868
Fridman / 1986 / Calculation for fishing gear designs. FAO Fishing Manuals : 185 ~ 212
Igor,T. / 2003 / Finite element modeling of net panels using a consistent net element / Ocean Engineering 30 : 251 ~ 270
Bessonneau,J.S. / 1998 / Study of the dynamics of submerged supple nets(application to trawls) / Ocean Engineering 24 (1) : 563 ~ 583
Cha,B.J. / 2002 / Dynamic simulation of a midwater trawl system‘s behavior / Fisheries science 68 : 1865 ~ 1868
Fridman / 1986 / Calculation for fishing gear designs. FAO Fishing Manuals : 185 ~ 212
Igor,T. / 2003 / Finite element modeling of net panels using a consistent net element / Ocean Engineering 30 : 251 ~ 270
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