Large-Eddy Simulation of Low-Reynolds-Number Flow Around Partially Porous Airfoils

被引：1

作者：

Li, Jinyu ^{[1
]}

Nagata, Koji ^{[2
]}

Watanabe, Tomoaki ^{[3
]}

机构：

[1] Nagoya Univ, Dept Aerosp Engn, Nagoya 4648603, Japan

[2] Kyoto Univ, Dept Mech Engn & Sci, Kyoto 6158540, Japan

[3] Nagoya Univ, Educ & Res Ctr Flight Engn, Nagoya 4648603, Japan

来源：

JOURNAL OF AIRCRAFT | 2023年 / 60卷 / 06期

基金：

日本学术振兴会;

关键词：

Aerodynamic Characteristics; Computational Fluid Dynamics; Thin Airfoil Theory; Aircraft Wing Design; Aerodynamic Performance; Boundary Layer Separation; Fluid Flow Properties; Vortex Structure; Adverse Pressure Gradient; Low Reynolds Number; PERMEABLE AIRFOILS; AERODYNAMICS; WINGS;

D O I：

10.2514/1.C037253

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

This paper uses the large-eddy simulation framework in OpenFOAM to investigate the flow characteristics around two-dimensional partially porous airfoils with symmetrical flat geometries, which were used in a previous experiment. The effects of a porous medium near the trailing edge are investigated at a chord Reynolds number of 350,000. Two porous media are modeled to investigate how the porous medium influences the flow around the airfoil and aerodynamic performance: One is a normal porous medium, defined as a homogeneous and isotropic material with identical properties in all directions. The other medium consists of straight holes perpendicular to the airfoil surface, allowing fluid to pass through unidirectionally. It is observed that drag and lift forces vary, depending on the internal structure of the porous medium. The size of the laminar separation bubbles also varies, depending on the parameters of the porous medium, such as the internal structure, the length of the porous section, and the porosity. It is shown that an airfoil with a low-porosity unidirectional porous medium increases the lift-to-drag ratio at high angles of attack as compared with the nonporous airfoil.

引用

页码：1998 / 2009

页数：12

共 40 条

[11] Bio-inspired wing morphing for unmanned aerial vehicles using intelligent materials
Galantai, V. P.
Sofla, A. Y. N.
Meguid, S. A.
Tan, K. T.
Yeo, W. K.
[J]. INTERNATIONAL JOURNAL OF MECHANICS AND MATERIALS IN DESIGN, 2012, 8 (01) : 71 - 79
[12] GALBRAITH M., 2008, 46th AIAA aerospace sciences meeting and exhibit, P225
[13] Measurement of the noise generation at the trailing edge of porous airfoils
Geyer, T.
Sarradj, E.
Fritzsche, C.
[J]. EXPERIMENTS IN FLUIDS, 2010, 48 (02) : 291 - 308
[14] Hain R., 2018, P LXLASER 2018 C
[15] The steady aerodynamics of aerofoils with porosity gradients
Hajian, Rozhin
Jaworski, JustinW.
[J]. PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 2017, 473 (2205):
[16] Hanna Y. G., 2019, AIAA AV 2019 FOR
[17] The transition from steady to weakly turbulent flow in a close-packed ordered array of spheres
Hill, RJ
Koch, DL
[J]. JOURNAL OF FLUID MECHANICS, 2002, 465 : 59 - 97
[18] NUMERICAL PREDICTION OF AERODYNAMIC PERFORMANCE FOR LOW REYNOLDS-NUMBER AIRFOILS
HSIAO, FB
HSU, CC
[J]. JOURNAL OF AIRCRAFT, 1989, 26 (07): : 689 - 692
[19] Aerodynamic performance investigation on a morphing unmanned aerial vehicle with bio-inspired discrete wing structures
Hui, Zhe
Zhang, Yang
Chen, Gang
[J]. AEROSPACE SCIENCE AND TECHNOLOGY, 2019, 95
[20] Aerodynamics of permeable membrane wings
Iosilevskii, Gil
[J]. EUROPEAN JOURNAL OF MECHANICS B-FLUIDS, 2011, 30 (05) : 534 - 542

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