Flow over an airfoil
AIM :
- To model the flow over a NACA0017 airfoil
- To compare the lift and drag forces for the angle of attacks 0,2,4,6,8,10
INTRODUCTION:
METHODOLOGY :
MODELLING :
The airfoil is modelled using the data present in the file.
Extrusion = 0.001 m
For each angle of attack of 0,2,4,6,8,10 airfoils are designed.
FLOW SIMULATION :
Simulation is conducted as follows :
Fluid : Air
Type : External , Time dependent
Velocity along X direction : 600m/s
Time duration : 5 s
Interval : 1 s
Angle of attack 10 deg :
Velocity cut plot
Drag Force Lift Force
Angle of attack 8 deg :
Velocity cut plot
Drag Force Lift Force
Angle of attack 6 deg :
Velocity cut plot
Drag Force Lift Force
Angle of attack 4 deg :
Velocity cut plot
Drag Force Lift Force
Angle of attack 2 deg :
Velocity cut plot
Drag Force Lift Force
Angle of attack 0 deg :
Drag and Lift force :
| Angle of attack | Drag Force (Fx) | Lift Force (Fy) |
| 0 | 2.17x10^-4 | 2.67x10^-4 |
| 2 | 2.31x10^-4 | 3.92x10^-4 |
| 4 | 2.75x10^-4 | 7.95x10^-4 |
| 6 | 3.44x10^-4 | 0.001 |
| 8 | 4.54x10^-4 | 0.002 |
| 10 | 5.7x10^-4 | 0.002 |
Angle of attack Vs Drag , Lift Force
RESULTS AND OBSERVATION :
It is found that the increase in angle of attack increases the drag force in a larger scale compare to increase in the Lift force . The increase in angle of attack decreases the increments required to achieve a stagnant value.