Hydrodynamic interactions on net panel and aquaculture fish cages: A review

The aquaculture fish cage encounters random waves in the open sea. Understandings of their dynamic behaviors are important for design of the deepwater fish cages. In this paper, the hydrodynamic responses of a gravity-typed fish cage in irregular waves are studied based on FEM and Morison equations. The floating collar and the bottom ring are modeled by beam elements. Net lines are modeled by truss elements. Hydrodynamic forces are calculated by a modified Morison equation taking the relative motion between the fluid and structure members into account. The displacement responses characters (time history and spectrum) of the fish cage floating collar in random waves are investigated. The response results show some similarities between fish cage in regular waves and irregular waves. Both rigid body motions and flexible structural deformations can be seen of the floating collar and the whole fish cage. The net volume changes with time in irregular wave and also high frequency responses caused by the structural deformation are observed.

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Successional development of fouling communities on open ocean aquaculture fish cages in the western Gulf of Maine, USA

Aquaculture ◽

10.1016/j.aquaculture.2006.11.003 ◽

2007 ◽

Vol 262 (2-4) ◽

pp. 289-301 ◽

Cited By ~ 52

Author(s):

Jennifer K. Greene ◽

Raymond E. Grizzle

Keyword(s):

Gulf Of Maine ◽

Open Ocean ◽

Fouling Communities ◽

Aquaculture Fish ◽

Fish Cages ◽

Open Ocean Aquaculture ◽

Successional Development

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Three-dimensional hydrodynamic modelling of tidal flows interacting with aquaculture fish cages

Journal of Fluids and Structures ◽

10.1016/j.jfluidstructs.2020.102871 ◽

2020 ◽

Vol 93 ◽

pp. 102871

Author(s):

Graham Rickard

Keyword(s):

Three Dimensional ◽

Hydrodynamic Modelling ◽

Tidal Flows ◽

Aquaculture Fish ◽

Fish Cages

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Design System Energy Sustainable Using Wind Turbine For Public Fish Cages Lightning at Belang Village in Southeast Minahasa

Journal of Sustainable Engineering: Proceedings Series ◽

10.35793/joseps.v1i2.18 ◽

2019 ◽

Vol 1 (2) ◽

pp. 137-142

Author(s):

Verna Y.P. Bokau ◽

Kristian Dame ◽

Victory Polly ◽

Steven Pandelaki

Keyword(s):

Wind Turbine ◽

Design System ◽

Fresh Fish ◽

North Sulawesi ◽

System Energy ◽

Arduino Uno ◽

Fish Cages ◽

Research Studies

These paper present the designing system of wind turbine for public fish cages lighting at Belang Village in Southeast Minahasa. Belang is one of popular destination to find a fresh fish in north sulawesi, but the problem is the efficiency of electricity is not sufficient for the fish farmer. Propeller helps in the motor to generating electricity. Comprehensive research studies are carried out in order to measure the lighting resistances. The generated data from wind turbine can be seen using LCD 2x16 which connected with microcontroller Arduino Uno. Finally, conclusions are fully drawn.

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HEAVY METAL CONCENTRATION IN SOME ORGANS OF OREOCHROMIS NILOTICUS L. INSIDE AND OUTSIDE FISH CAGES IN RIVER NILE AT DAMIETTA REGION-

Egyptian Journal of Aquatic Biology and Fisheries ◽

10.21608/ejabf.1999.3457 ◽

1999 ◽

Vol 3 (4) ◽

pp. 399-421 ◽

Cited By ~ 1

Author(s):

Eaman Abdel-Baky ◽

Mohammad Zyadah ◽

Salah Etreby ◽

Eman Dorgham

Keyword(s):

Heavy Metal ◽

Metal Concentration ◽

Oreochromis Niloticus ◽

Heavy Metal Concentration ◽

River Nile ◽

Fish Cages

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Hydrodynamics can determine the optimal route for microswimmer navigation

Communications Physics ◽

10.1038/s42005-021-00522-6 ◽

2021 ◽

Vol 4 (1) ◽

Author(s):

Abdallah Daddi-Moussa-Ider ◽

Hartmut Löwen ◽

Benno Liebchen

Keyword(s):

Flow Field ◽

Hydrodynamic Interactions ◽

Optimal Trajectories ◽

Optimal Route ◽

Active Particles ◽

Navigation Strategy ◽

Navigation Strategies

AbstractAs compared to the well explored problem of how to steer a macroscopic agent, like an airplane or a moon lander, to optimally reach a target, optimal navigation strategies for microswimmers experiencing hydrodynamic interactions with walls and obstacles are far-less understood. Here, we systematically explore this problem and show that the characteristic microswimmer-flow-field crucially influences the navigation strategy required to reach a target in the fastest way. The resulting optimal trajectories can have remarkable and non-intuitive shapes, which qualitatively differ from those of dry active particles or motile macroagents. Our results provide insights into the role of hydrodynamics and fluctuations on optimal navigation at the microscale, and suggest that microorganisms might have survival advantages when strategically controlling their distance to remote walls.

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