Wang Gang, Wang Zhi, Jiao Zhaoqi, Gong Pihai, Guan Changtao
State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
National Engineering Research Centre for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China.
Biomimetics (Basel). 2025 Jun 10;10(6):385. doi: 10.3390/biomimetics10060385.
The cambered deflectors in aquacultural facilities are applied to enhance hydrodynamic efficiencies or enable flow fields to be fully developed. Given the anticipated improvements with the bio-inspired profiles or tandem configurations, the hydrodynamics of cambered deflectors with the above features are investigated at Re=1×105. The relationship between force coefficients and local flow behaviors for both bionic and non-bionic isolated deflectors, as well as tandem deflectors, is revealed using k-ω SST simulation. The dependencies of force coefficients on gap (), stagger (), and inclination angles (θ) in tandem deflectors are illustrated using an updated metamodeling workflow with simulated data. It is demonstrated that the variations of force coefficients over angles of attack are related to flow physics in boundary-layer regions. The non-bionic isolated deflector with the θ=10∘ prevails as the decent performances of CL and γ globally, which is chosen in the following studies. Regarding tandem deflectors, θ plays a more vital role in drag coefficients (CD) and lift coefficients (CL), while the influence of is not quite considerable compared to . Aiming for cost minimizations and lift improvements, an optimized tandem case is obtained and justified with the superiorities in flow fields. This study has provided novel insights into the designs and optimizations of cambered deflectors in aquacultural engineering.
水产养殖设施中的弧形导流板用于提高水动力效率或使流场充分发展。鉴于受生物启发的外形或串联配置有望带来改进，在雷诺数Re = 1×10⁵的条件下，对具有上述特征的弧形导流板的流体动力学进行了研究。使用k-ω SST模拟揭示了仿生和非仿生孤立导流板以及串联导流板的力系数与局部流动行为之间的关系。利用更新后的元建模工作流程和模拟数据，阐述了串联导流板中力系数对间隙（）、交错（）和倾斜角（θ）的依赖性。结果表明，力系数随攻角的变化与边界层区域的流动物理相关。在全局范围内，θ = 10°的非仿生孤立导流板在升力系数CL和γ方面表现出色，在后续研究中被选用。对于串联导流板，θ在阻力系数（CD）和升力系数（CL）中起着更为关键的作用，而与相比，的影响不太显著。为了实现成本最小化和升力提升，获得了一个优化的串联案例，并通过流场优势进行了论证。本研究为水产养殖工程中弧形导流板的设计和优化提供了新的见解。
