Re = 1 × 105时弯曲导流板流动的数值研究:参数化研究。

IF 3.4 3区 医学 Q1 ENGINEERING, MULTIDISCIPLINARY
Gang Wang, Zhi Wang, Zhaoqi Jiao, Pihai Gong, Changtao Guan
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引用次数: 0

摘要

弧形导流板在水产养殖设施中的应用是为了提高水动力效率或使流场充分发展。考虑到仿生型或串联配置的预期改进,Re=1×105对具有上述特征的弧形偏转板的流体动力学进行了研究。通过k-ω海温模拟,揭示了仿生和非仿生隔离型偏转板以及串联型偏转板的力系数与局部流动行为的关系。力系数对间隙(G),交错(S)和倾斜角(θ)在串联偏转器的依赖关系是用一个更新的元建模工作流与模拟数据说明。结果表明,力系数随迎角的变化与边界层区域的流动物理特性有关。θ=10°的非仿生隔离偏转器作为CL和γ在全球范围内的良好性能,在以下研究中被选用。对于串联导流板,θ对阻力系数(CD)和升力系数(CL)的影响更为重要,而S的影响相对于g的影响较小。以降低成本和提高升力为目标,得到了一种优化的串联导流板,并利用其流场优势进行了论证。本研究为水产养殖工程中弧形偏转板的设计和优化提供了新的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical Investigations of Flow over Cambered Deflectors at Re = 1 × 105: A Parametric Study.

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 (G), stagger (S), 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 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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来源期刊
Biomimetics
Biomimetics Biochemistry, Genetics and Molecular Biology-Biotechnology
CiteScore
3.50
自引率
11.10%
发文量
189
审稿时长
11 weeks
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