Finite Element Analysis on Turbulent Flow Over Two Side-by-Side Rotating Cylinders

Shoaib Anwar, M. Khalil, S. Saha
{"title":"Finite Element Analysis on Turbulent Flow Over Two Side-by-Side Rotating Cylinders","authors":"Shoaib Anwar, M. Khalil, S. Saha","doi":"10.1145/3307363.3307380","DOIUrl":null,"url":null,"abstract":"A numerical investigation has been performed for fully-developed turbulent flow over two side-by-side circular cylinders of the same diameter, both of which rotate in the same direction with the same speed. The governing equation consists of Reynolds-Average Navier-Stokes (RANS) equations along with SST (Shear Stress Transport) turbulence model, which are solved using finite element method in order to evaluate the characteristics of the turbulent flow. To maintain the turbulent flow over the cylinders, computation is carried out at a high Reynolds number of Re = 10000. Parametric simulation is performed for various spin ratios (α = Uθ/U∞, where Uθ is the circumferential velocity of the cylinder and U8 is the free stream velocity of the fluid) from 0 to 1, and gap ratios (T/D, where T is the transverse distance between the centers of two cylinders) from 2 to 4. Effects of two different rotating combinations of the cylinders (clockwise or counter-clockwise) on the aerodynamic characteristics of the fluid flow are examined in terms of lift (CL) and drag (CD) coefficients. The wake region behind the rotating cylinders and the separation points over the cylinders are also visualized via streamline and contour plots of pressure field around the cylinders. Simulation results reveal that the direction of the rotation of the cylinders strongly affects the streamlines and the vortex shedding when the spacing between the cylinders is small.","PeriodicalId":130820,"journal":{"name":"Proceedings of the 11th International Conference on Computer Modeling and Simulation","volume":"8 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 11th International Conference on Computer Modeling and Simulation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1145/3307363.3307380","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

A numerical investigation has been performed for fully-developed turbulent flow over two side-by-side circular cylinders of the same diameter, both of which rotate in the same direction with the same speed. The governing equation consists of Reynolds-Average Navier-Stokes (RANS) equations along with SST (Shear Stress Transport) turbulence model, which are solved using finite element method in order to evaluate the characteristics of the turbulent flow. To maintain the turbulent flow over the cylinders, computation is carried out at a high Reynolds number of Re = 10000. Parametric simulation is performed for various spin ratios (α = Uθ/U∞, where Uθ is the circumferential velocity of the cylinder and U8 is the free stream velocity of the fluid) from 0 to 1, and gap ratios (T/D, where T is the transverse distance between the centers of two cylinders) from 2 to 4. Effects of two different rotating combinations of the cylinders (clockwise or counter-clockwise) on the aerodynamic characteristics of the fluid flow are examined in terms of lift (CL) and drag (CD) coefficients. The wake region behind the rotating cylinders and the separation points over the cylinders are also visualized via streamline and contour plots of pressure field around the cylinders. Simulation results reveal that the direction of the rotation of the cylinders strongly affects the streamlines and the vortex shedding when the spacing between the cylinders is small.
两个并排旋转圆柱湍流的有限元分析
本文对两个直径相同且沿相同方向以相同速度旋转的并排圆柱体上完全发展的湍流进行了数值研究。控制方程由Reynolds-Average Navier-Stokes (RANS)方程和SST(剪切应力输运)湍流模型组成,采用有限元法对其进行求解,以评价湍流的特性。为了保持柱体上的湍流,在Re = 10000的高雷诺数下进行计算。参数化模拟了从0到1的不同自旋比(α = Uθ/U∞,其中Uθ为圆柱体的周向速度,U8为流体的自由流动速度)和从2到4的不同间隙比(T/D,其中T为两个圆柱体中心之间的横向距离)。根据升力(CL)和阻力(CD)系数,研究了两种不同的气缸旋转组合(顺时针或逆时针)对流体流动气动特性的影响。旋转气缸后的尾迹区域和气缸上的分离点也通过气缸周围压力场的流线和等高线图可视化。仿真结果表明,当气缸间距较小时,气缸的旋转方向对流线和旋涡脱落有较大影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信