J4 ›› 2010, Vol. 7 ›› Issue (1): 87-94.doi: 10.1016/S1672-6529(09)60196-7
Effect of Chord Flexure on Aerodynamic Performance of a Flapping Wing
Tuyen Quang Le1, Jin Hwan Ko2, Doyoung Byun1, Soo Hyung Park1, Hoon Choel Park3
- 1. Department of Aerospace and Information Engineering, Konkuk University, Seoul 143-701, Korea
2. School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea
3. Department of Technology Fusion, Konkuk University, Seoul 143-701, Korea
Effect of Chord Flexure on Aerodynamic Performance of a Flapping Wing
Tuyen Quang Le1, Jin Hwan Ko2, Doyoung Byun1, Soo Hyung Park1, Hoon Choel Park3
- 1. Department of Aerospace and Information Engineering, Konkuk University, Seoul 143-701, Korea
2. School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea
3. Department of Technology Fusion, Konkuk University, Seoul 143-701, Korea
摘要：
Inspired by the fact that a high flexible wing in nature generates high aerodynamic performance, we investigated the aerodynamic performance of the flapping wing with different chord flexures. The unsteady, incompressible, and viscous flow over airfoil NACA0012 in a plunge motion was analyzed by using Navier-Stokes equation. Grid deformation, in which finite element and interpolation ideas are mixed, was introduced for computing large grid deformation caused by the chord flexures. We explored the optimal phase angle for thrust force and propulsive efficiency by varying the chord flexure from 0.05 to 0.7 when reduced frequency and plunge amplitude were fixed. Throughout parametric study on the phase angle and chord flexure amplitude, the maximum thrust force is achieved near at 0? in all given conditions, meanwhile, it is found that the optimal phase angle has dependency of chord flexure amplitude, which achieves higher aerodynamic performance compared to previous studies. These findings will provide a useful guideline for determining wing flexibility in design of a bio-mimetic air vehicle.