Effects of the Pivot Point Locations on the Propulsive Performance of a Two-Dimensional Flapping Elliptic Airfoil with a Pitching Angular Offset

Jit Sinha*, Sunil Manohar Dash, Kim Boon Lua

*此作品的通信作者

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

This article reports an investigation on the impacts of pivot locations and pitching angular offsets on the two-dimensional flapping elliptic airfoil’s time-averaged and transient aerodynamic force coefficients. The study is carried out using ANSYS FLUENT solver and water tunnel experiments. Three different pivot point locations and pitch angular offsets are considered while keeping the flapping frequency fixed at 0.32, pitching amplitude at 30° and Reynolds number at 5000. The flapping airfoil generates a non-zero time-averaged lift for a non-zero pitch angular offset due to asymmetry kinematics in the downstroke and upstroke of a flapping cycle at all pivot locations. Furthermore, the time-averaged lift performance of the flapping airfoil is substantially improved at every pivot point locations for increased pitch angular offset. However, the time-averaged thrust generally deteriorates with the pitch angular offset, except at small pitch angular offset values. We have further identified the optimum pivot location and pitch angular offset for superior aerodynamic performances at the considered parametric range of investigation.

原文English
主出版物標題Fluid Mechanics and Fluid Power (Vol. 2)- Select Proceedings of FMFP 2021
編輯Suvanjan Bhattacharyya, Ali Cemal Benim
發行者Springer Science and Business Media Deutschland GmbH
頁面1-6
頁數6
ISBN(列印)9789811969690
DOIs
出版狀態Published - 2023
事件48th National Conference on Fluid Mechanics and Fluid Power, FMFP 2021 - Pilani, India
持續時間: 27 12月 202129 12月 2021

出版系列

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

Conference

Conference48th National Conference on Fluid Mechanics and Fluid Power, FMFP 2021
國家/地區India
城市Pilani
期間27/12/2129/12/21

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