Unsteady aerodynamics of plunging cambered foil at low Reynolds number

被引：2
|
作者：
Shaik, Masuruddin [1 ]
Hazarika, Shyamanta M. [1 ]
机构：
[1] Indian Inst Technol, Dept Mech Engn, Gauhati, India
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING | 2023年 / 237卷 / 02期
关键词：
plunging airfoil; wake pattern; unsteady flow; AIRFOIL; LIFT; MECHANISMS; SIMULATION; EFFICIENCY;
D O I：
10.1177/09544100221101724
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
The present work focuses on the investigation of unsteady aerodynamics of plunging cambered foil with conditions corresponding to that of a Micro Air Vehicle. The effect of non-dimensional plunge amplitude, plunging frequency and the dimensionless plunge velocity on the propulsive performance of a harmonically plunging cambered foil are studied by varying Reynolds number from 2.5 x 10(4) to 7.5 x 10(4). Further, the flow field around the foil is analysed to understand the influence of the above-mentioned parameters and the reasons behind the positive thrust force generation. It is observed that these investigated parameters remarkably influence the instantaneous force coefficients. It is also noticed that these parameters have a significant effect on the topology of the leading edge vortex which can dramatically change the aerodynamic performance of the foil. It is observed that the Reynolds number also has a significant influence on the drag-thrust transition.
引用
收藏
页码：374 / 386
页数：13
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