4.7 Article

Simulation study on flow behavior around a wall-mounted finite height square cylinder with corner chamfer

出版社

ELSEVIER
DOI: 10.1016/j.jweia.2022.105157

关键词

Bluff -body; Finite cylinder; Boundary layer; IDDES; Corner chamfer

资金

  1. Ministerio de Ciencia e Innovacion
  2. European Regional Development Fund, under Research Grant WindSound project [PID2021- 125278OB-I00]

向作者/读者索取更多资源

This study investigates the effect of applying corner chamfer on the wake of a square cylinder and understands the impact of various chamfer sizes on flow characteristics. The results show that the application of corner chamfer decreases the wake and improves the flow, such as reducing drag coefficient, minimizing the horseshoe vortex zone, and shrinking the wake region behind the cylinder.
Current work aims to investigate the effect of applying corner chamfer on the wake of the square cylinder and understand the effect that various chamfer sizes have on the flow characteristics. The study also involves the understanding of the weakening of the wake, thus, possible improvement in structural integrity. The result of applying various corner chamfer on flow, mainly the plate cylinder juncture region, the tip region, and the wake region around the wall-mounted finite height square cylinder are investigated. The Aspect Ratio (AR) is kept at 4. The investigation employed the Improved Delayed Detached Eddy Simulation (IDDES) turbulence model in Fluent. Flow characteristics for the square cylinder without chamfer were validated against wind tunnel experimental results at a Reynolds number of 12,000 involving a similar geometry. Three cylinders with increasing corner chamfer were studied, and their results, as well as a comparison with the simple square cyl-inder, are discussed in this paper. The results in the wake region for various vertical and horizontal planes of the bluff body were analyzed. By applying a corner chamfer, a decrease in the wake was observed. By increasing the chamfer, improvement in the flow was observed, i.e., a reduction in drag coefficient, a smaller horseshoe vortex zone, wake region behind the cylinder was reduced, Strouhal number increased, and vortex structure diminish quicker.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据