[고려댿�학껓] 기계공학실험2 A+ / 8. Smoke, Wind Tunnel Experiment

1. Smoke Tunnel Experiment
1) Observe and record various streamline of the figures through observing the visualization glass.
2) What is curvature effect of the external flow?
3) Explain the cause of the separation at the external flow of the cylinder and sphere shape material.
4) Explain the Stall phenomenon at the airfoil, and investigate relationship between the change of the separation point at the streamline and the Stall phenomenon.
5) Investigate the flow Phenomenon occurs around the 3 dimensional airfoil.
6) Write about the Streamline and Stream function.
7) Propose improved designs of the apparatus considering the theories that you have learned in this experiment.

2. Wind Tunnel Experiment
1) Calculate the wind speed.
2) ~ 3) Find the lift, drag, lift and drag coefficients of each test. And record the calculation results in the measurement table.
4) Draw an angle of attack - lift coefficient plot.
5) Draw an angle of attack - drag coefficient plot.
6) Analyze the change of lift coefficient and drag coefficient according to the angle of attack. Particularly, Analyze the angle of attack where Stall Phenomenon occurs
7) Analyze the reason why the angles of attack where the Stall begins to occur are different when increasing the angle of attack and when decreasing the angle of attack respectively.
8) Analyze the effect of flow velocity change on the location of the separation point when the angle of attack is fixed. (refer to boundary layer characteristics of laminar and turbulent flow)
9) Investigate some methods to increase the lift value.
10) Suggest ways to improve the design of equipment related to the theory learned in this experiment