科研之友
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摘要
Aquaculture is expanding all over the world. The limitations are mainly related to location, water flow, escapees and fish health. The present status of flow hydrodynamics within and around sea-cages is reviewed in this paper, providing a framework for understanding the spatial and temporal variability of key environmental parameters within and outside sea-cages. The paper presents contemporary experiments on drag forces on net panels, model-scale cages, the biological effects of fish, fish movements and fouling as the major topics. It includes also a presentation of different theoretical studies as an attempt to simulate experiments. The accumulated experimental results are sorted out following a gradually increasing scale from the cruciform as a basic element of a net, via net panels to a net cage with solidity and velocity as the main parameters, while the effect of fish and fouling are discussed only at the full-scale level. The compilation is important to understand issues related to the design and mechanics of net cages, taking into account fish behavior in relation to future engineering development within the field of hydrodynamics in aquaculture cage farming. Improved knowledge of water movement through aquaculture cages is critical for future development of efficient and sustainable aquaculture, including a shift toward more exposed locations.
- 出版日期2013-1-15
