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Numerical Investigations of Flow over Cambered Deflectors at Re = 1 x 105: A Parametric Study

文献类型： 外文期刊

作者： Wang, Gang 1 ; Wang, Zhi 2 ; Jiao, Zhaoqi 1 ; Gong, Pihai 1 ; Guan, Changtao 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao 266071, Peoples R China

2.Zhejiang Ocean Univ, Natl Engn Res Ctr Marine Aquaculture, Zhoushan 316022, Peoples R China

3.Dalian Ocean Univ, Sch Nav & Naval Architecture, Dalian 116023, Peoples R China

关键词： cambered deflectors; bionics; hydrodynamics; CFD; metamodeling

期刊名称：BIOMIMETICS （ 影响因子：3.9； 五年影响因子：4.0 ）

ISSN：

年卷期： 2025 年 10 卷 6 期

页码：

收录情况： SCI

摘要： 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=1x105. 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-omega SST simulation. The dependencies of force coefficients on gap (G), stagger (S), and inclination angles (theta) 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 theta=10 degrees prevails as the decent performances of CL and gamma globally, which is chosen in the following studies. Regarding tandem deflectors, theta plays a more vital role in drag coefficients (CD) and lift coefficients (CL), while the influence of S is not quite considerable compared to G. 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.

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