Numerical Investigations of Flow over Cambered Deflectors at Re = 1 × 105: A Parametric Study
Gang Wang, Zhi Wang, Zhaoqi Jiao, Pihai Gong, Changtao Guan
TL;DR
This study explores how cambered deflectors in aquaculture can be optimized for better hydrodynamic performance using simulations and modeling.
Contribution
The paper introduces a new metamodeling workflow for analyzing and optimizing cambered deflectors in aquaculture.
Findings
The non-bionic isolated deflector with θ=10° shows the best overall performance in lift and drag coefficients.
In tandem deflectors, inclination angle θ significantly affects drag and lift coefficients more than stagger angle S.
An optimized tandem deflector configuration is identified for cost minimization and improved lift.
Abstract
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∘…
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Taxonomy
TopicsFluid Dynamics and Vibration Analysis · Fluid Dynamics and Turbulent Flows · Wind and Air Flow Studies