中国舰船研究2025，Vol.20Issue(3)：63-71,9.DOI:10.19693/j.issn.1673-3185.03813
限制边界内变截面串列双方柱绕流分析
Analysis on flow past tandem square cylinders of variable size in constrained boundary
摘要
Abstract
[Objectives]This study focuses on the influence and drag force of tandem square cylinders of variable size(with a side length ratio of 1.5)in order to determine the flow past tandem square cylinders in a constrained boundary under different gap ratios at a Reynolds number of 100.[Methods]Based on the lattice Boltzmann method with the bounce-back boundary condition,comparisons of the effects of tandem cylinders of equal and variable size are made under different gap ratios.[Results]The results indicate that cylinders of variable size can accelerate the change of the flow field pattern to a certain extent.However,they can also delay the change of the flow pattern at a gap ratio of 6.In addition,they can achieve a resistance reduction of 9.16%at most compared with the flow past a single square cylinder.However,tandem cylinders of equal size can achieve 7.76%at most.On the other hand,compared with tandem cylinders of equal size,those of vari-able size can achieve a resistance reduction of 67.79%.Thus,tandem cylinders of variable size can obtain a better reduction in drag force,making them a feasible way to achieve flow control and drag reduction.[Conclusions]The results of this study can provide basic guidance for the optimization of drag and flow control for flow past square cylinders in a constrained boundary.关键词
变截面串列双方柱/限制边界/格子Boltzmann/流场控制Key words
tandem square cylinders of variable size/constrained boundary/lattice Boltzmann/flow control分类
交通运输引用本文复制引用
余洋,杨光照,侯国祥..限制边界内变截面串列双方柱绕流分析[J].中国舰船研究,2025,20(3):63-71,9.基金项目
工业和信息化部高技术船舶科研计划资助项目(2020307) （2020307）
国家自然科学基金资助项目(51979115) （51979115）
