On the flow behaviour of 2D flexible airfoils
This thesis studies the on flow behaviour of the corrugated airfoil proposed by B. G Newman et al. [1]. Unlike previous studies by Flint et al. [2], this study put the flexibility and deformation of the airfoil into consideration. As the wings of real life dragonfly wings are flexible in natur...
Saved in:
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Final Year Project |
| Language: | English |
| Published: |
2018
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/76279 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | This thesis studies the on flow behaviour of the corrugated airfoil proposed by B. G Newman
et al. [1]. Unlike previous studies by Flint et al. [2], this study put the flexibility and
deformation of the airfoil into consideration. As the wings of real life dragonfly wings are
flexible in nature, it is only natural to consider the airfoils used in fluid dynamic calculations
as flexible in order to better understand how insects such as dragonfly can achieve better
flight dynamics at low Reynold’s number with their wings. The aim of this study is to study
the lift and drag of the airfoil, the pressure distribution around, and streamline across the
flexible airfoil at different angle of attacks. A computational fluid dynamics programme was
set up and a flexible airfoil was placed in a low speed fluid flow at 11 different angles of
attack. A stiff airfoil with identical dimensions was placed in the exact same setting for
control purpose.
The lift coefficient of the flexible airfoil was found to be lower than that of the stiff airfoil but
the stall angle increased and stall was delayed. The drag coefficient of flexible airfoil was
also lower than the stiff airfoil and the lift over drag ratio for the flexible airfoil was lower
compared to the stiff airfoil at higher angles of attack. |
|---|