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A STUDY ON A NEW BIO-INSPIRED WING DESIGN AND 2D ANALYSIS OF ITS AERODYNAMIC CHARACTERISTICS
(A STUDY ON A NEW BIO-INSPIRED WING DESIGN AND 2D ANALYSIS OF ITS AERODYNAMIC CHARACTERISTICS )

Yazar : * *  Neslihan AYDIN, Mehmet Erman CALISKAN, Irfan KARAGOZ  
Türü :
Baskı Yılı : 2020
Sayı : 8
Sayfa : 126-136
    


Özet
Airfoils which are designed to take advantage of aerodynamic forces, are standardized and widely used in air vehicles and turbomachinery. However, non-standard airfoil designs are also being investigated. These also include studies inspired by the wings of insects and birds and the tails of fish. This study is devoted to maple seeds which can be carried far away by the wind. Size ratios of the maple seed were obtained from the measurements taken on different seeds. Besides, the 3D model of a sample seed was transferred to a computer environment by means of a 3D scanner. A CFD study was performed to obtain aerodynamic characteristics of this model airfoil. The two-dimensional airfoil formed by considering the mid-section of the 3D model was examined in the CFD study. The solution area was divided into hexa mesh, and inlet and outlet boundary conditions were defined. In the solution, Spalart Almaras and k-? was used as a turbulence model. Also the k-omega turbulence model was used together with the standard wall function and SST. The mathematical and numerical models used in the solution were first applied to the standard NACA 0015 profile with known characteristics, and a validation study was performed. Then, the analysis of the new bio-inspired design was carried out. Analyzes were repeated at different Re numbers and attack angles. The results obtained in this study were compared and evaluated.

Anahtar Kelimeler
airfoils, computational fluid dynamics, bio-inspired wing, biomimicry, aerodynamics

Abstract
Airfoils which are designed to take advantage of aerodynamic forces, are standardized and widely used in air vehicles and turbomachinery. However, non-standard airfoil designs are also being investigated. These also include studies inspired by the wings of insects and birds and the tails of fish. This study is devoted to maple seeds which can be carried far away by the wind. Size ratios of the maple seed were obtained from the measurements taken on different seeds. Besides, the 3D model of a sample seed was transferred to a computer environment by means of a 3D scanner. A CFD study was performed to obtain aerodynamic characteristics of this model airfoil. The two-dimensional airfoil formed by considering the mid-section of the 3D model was examined in the CFD study. The solution area was divided into hexa mesh, and inlet and outlet boundary conditions were defined. In the solution, Spalart Almaras and k-? was used as a turbulence model. Also the k-omega turbulence model was used together with the standard wall function and SST. The mathematical and numerical models used in the solution were first applied to the standard NACA 0015 profile with known characteristics, and a validation study was performed. Then, the analysis of the new bio-inspired design was carried out. Analyzes were repeated at different Re numbers and attack angles. The results obtained in this study were compared and evaluated.

Keywords
airfoils, computational fluid dynamics, bio-inspired wing, biomimicry, aerodynamics

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