A Study on the Wake Regime Control and Drag Reduction Using Single Splitter Plate for a Flow Past a Semicircular Cylinder

S. M. Dash*, S. D. Chavda, K. B. Lua

*Corresponding author for this work

研究成果: Conference contribution同行評審

摘要

In this paper, a low Reynolds number flow (Re = 100) around the semicircular cylinder of diameter D with and without splitter plate is numerically investigated using in-house developed flexible forcing IB—LBM scheme. The length of the splitter plate is systematically varied from 0.5D to 4.0D to investigate its effect on the flow structure and on the vortex-induced forces. The recirculation region behind the semicircular cylinder is increased with an increase in the length of the splitter plate, and as a consequence the base pressure is recovered, and the time-averaged drag coefficient is reduced. Complete suppression of the fluctuating lift coefficient and von Karman vortex shedding is noticed for a splitter plate of length 4.0D for which a maximum drag reduction of around 32% is found. The wake regime as a function of splitter plate length is thoroughly analysed.

原文English
主出版物標題Advances in Mechanical Engineering - Select Proceedings of ICRIDME 2018
編輯B.B. Biswal, Bikash Kumar Sarkar, P. Mahanta
發行者Springer
頁面97-105
頁數9
ISBN(列印)9789811501234
DOIs
出版狀態Published - 1 一月 2020
事件International Conference on Recent Innovations and Developments in Mechanical Engineering, IC-RIDME 2018 - Shillong, India
持續時間: 8 十一月 201810 十一月 2018

出版系列

名字Lecture Notes in Mechanical Engineering
ISSN(列印)2195-4356
ISSN(電子)2195-4364

Conference

ConferenceInternational Conference on Recent Innovations and Developments in Mechanical Engineering, IC-RIDME 2018
國家India
城市Shillong
期間8/11/1810/11/18

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