Probability Evaluation of Hydrodynamic Shear Damage for Fish Passing through Jet Fish Pumps

Maosen Xu; Jiegang Mou; Denghao Wu; Peijian Zhou; Yunqing Gu; Shuihua Zheng

doi:10.5293/IJFMS.2020.13.2.536

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자료유형: 학술저널

저자정보: Maosen Xu (Zhejiang University of Technology) Jiegang Mou (China Jiliang University) Denghao Wu (China Jiliang University) Peijian Zhou (China Jiliang University) Yunqing Gu (China Jiliang University) Shuihua Zheng (Zhejiang University of Technology)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.13 No.2

발행연도: 2020.6

수록면: 536 - 542 (7page)

DOI: 10.5293/IJFMS.2020.13.2.536

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연구주제

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연구배경

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연구방법

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연구결과

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Jet fish pump is an efficient tool to transport fish. Due to the operation principle, shear flow cannot be avoided in jet fish pumps. Shear flow is a potential risk for fish damage in the fluid machinery. Therefore, it is valuable to evaluate the probability of hydrodynamic shear damage for fish passing through jet fish pumps. In the present study, the numerical investigation was performed on the distribution of dangerous region, where exposure strain rate was above 500 s-1, and probability of hydrodynamic shear damage for fish. Experiments were conducted to check the damage probability calculated by numerical simulation and the injury of fish was analyzed. The results showed that the dangerous region is usually distributed in the near wall region. As the rise of flow ratio, the range of dangerous region gradually became wider and the dangerous region extended into the throat. In the same inlet boundary conditions, the damage probability is lower for a jet fish pump with a bigger area ratio. With the increase of flow ratio, both probability of hydrodynamic shear damage and effect of area ratio grow. Compared with the results of experiments, the probability of hydrodynamic shear damage can be overestimated. The main reasons lie in the extremely short transit time for fish, independent movement of fish and the velocity difference between fish and flow.

#jet fish pump #shear damage #area ratio #damage probability evaluation

참고문헌 (22)

참고문헌 신청

Summerfelt, S. T. / 2008 / Advances in fish harvest technologies for circular tanks / Aquacultural Engineering 40(2):62~71

Grizzle, J. M. / 1992 / Skin injuries and serum enzyme activities of channel catfish(Ictalurus punctatus)harvested by fish pumps / Aquaculture 107(4):333~346

Xiao, L. Z. / 2015 / Movement characteristics of fish in a jet fish pump / Ocean Engineering 108:480~492

Xiao, L. Z. / 2015 / Cavitating flow in annular jet pumps / International Journal of Multiphase Flow 71:116~132

Xu, M. S. / 2017 / Experimental investigation on the transport of different fish species in a jet fish pump / Aquacultural Engineering 79:42~48

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