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

页码：374 / 386

页数：13

共 22 条

[1] On the force signatures of a pair of multi-plunging airfoils
Amiralaei, Mohammad R.
Alighanbari, Hekmat
Hashemi, Seyed M.
[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING, 2013, 227 (G4) : 647 - 662
[2] Unsteady Lift and Moment of a Periodically Plunging Airfoil
Chiereghin, N.
Cleaver, D. J.
Gursul, I.
[J]. AIAA JOURNAL, 2019, 57 (01) : 208 - 222
[3] Investigation of High-Lift Mechanisms for a Flat-Plate Airfoil Undergoing Small-Amplitude Plunging Oscillations
Cleaver, D. J.
Wang, Z.
Gursul, I.
[J]. AIAA JOURNAL, 2013, 51 (04) : 968 - 980
[4] Lift Enhancement by Means of Small-Amplitude Airfoil Oscillations at Low Reynolds Numbers
Cleaver, D. J.
Wang, Z.
Gursul, I.
Visbal, M. R.
[J]. AIAA JOURNAL, 2011, 49 (09) : 2018 - 2033
[5] Ferziger J. H., 2002, COMPUTATIONAL METHOD, V3
[6] Plunging Oscillations of Airfoils and Wings: Progress, Opportunities, and Challenges
Gursul, Ismet
Cleavers, David
[J]. AIAA JOURNAL, 2019, 57 (09) : 3648 - 3665
[7] Systematic reduced order model development of a pitching NACA0012 airfoil
Halterman, Jaclynn Mohrfeld
Uddin, Mesbah
[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING, 2021, 235 (04) : 427 - 438
[8] Effect of spanwise flexibility on flapping wing propulsion
Heathcote, S.
Wang, Z.
Gursul, I.
[J]. JOURNAL OF FLUIDS AND STRUCTURES, 2008, 24 (02) : 183 - 199
[9] Numerical prediction of the performance of marine propellers using computational fluid dynamics simulation with transition-sensitive turbulence model
Helal, Mohamed M.
Ahmed, Tamer M.
Banawan, Adel A.
Kotb, Mohamed A.
[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART M-JOURNAL OF ENGINEERING FOR THE MARITIME ENVIRONMENT, 2019, 233 (02) : 515 - 527
[10] Analysis of Strouhal number based equivalence of pitching and plunging airfoils and wake deflection
Khalid, Muhammad Saif Ullah
Akhtar, Imran
Durrani, Naveed Iqbal
[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING, 2015, 229 (08) : 1423 - 1434

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