华中科技大学学报（自然科学版）2025，Vol.53Issue(7)：151-157,7.DOI:10.13245/j.hust.250186
均匀流作用下坐底式养殖网箱的水动力特性研究
Hydrodynamic assessment of an offshore bottom-supported aquaculture platform in uniform current
摘要
Abstract
A combined approach of numerical simulation and physical model experiments was employed to investigate the hydrodynamic behaviour of a bottom-fixed aquaculture cage equipped with double-layer nets.In the numerical simulation,the fishing net was simplified as porous media panels using the porous media model,and the frame structure was treated as a rigid wall.The flow field distributions under different inflow velocities,incident angles,and the absence of fishing nets were simulated based on the Realizable k-ε turbulence model.The numerical results were subsequently validated against physical measurements obtained from wave tank experiments,demonstrating good agreement between the two approaches.The findings indicate that double-layer nets significantly attenuate flow velocity,leading to sharp velocity gradients near the cage and forming a low-velocity zone in the downstream region.The presence of side nets was found to accelerate the shedding of wake vortices behind the central column,while bottom nets exhibited a relatively small impact on the flow velocity.Furthermore,the variation in incident wave direction had a relatively large impact on the velocity distribution inside and around the cage.From an engineering perspective,excessive structural dimensions of the cage framework should be avoided to minimize potential vortex-induced loads.关键词
多孔介质/坐底式养殖网箱/流场/网衣/流速衰减Key words
porous media/bottom-supported aquaculture platform/flow field/fishing net/velocity reduction分类
农业科技引用本文复制引用
吉健,周利兰,刘斌,徐磊..均匀流作用下坐底式养殖网箱的水动力特性研究[J].华中科技大学学报（自然科学版）,2025,53(7):151-157,7.基金项目
国家自然科学基金面上项目(52271326) （52271326）
中国国家留学基金委资助项目(202306950024). （202306950024）
