1. Dept of Mechanical Engineering
Fluid Mechanics II
External viscous flow
Dr. Afsaneh Mojra
Dept of Mechanical Engineering

2. External Viscous Flow Dr. Afsaneh Mojra
Details of viscous flow around an airfoil:
External Viscous Flow Dr. Afsaneh Mojra

3. External Viscous Flow Dr. Afsaneh Mojra
Boundary layer vs. flow regime:
External Viscous Flow Dr. Afsaneh Mojra

4. External Viscous Flow Dr. Afsaneh Mojra
Boundary layer definitions:
External Viscous Flow Dr. Afsaneh Mojra

5. External Viscous Flow Dr. Afsaneh Mojra
Wind tunnel:
External Viscous Flow Dr. Afsaneh Mojra

6. External Viscous Flow Dr. Afsaneh Mojra
Wind tunnel:
External Viscous Flow Dr. Afsaneh Mojra

7. External Viscous Flow Dr. Afsaneh Mojra
Drag coefficient on Flat Plate vs. flow regime:
External Viscous Flow Dr. Afsaneh Mojra

8. External Viscous Flow
Form drag vs. friction drag:

9. External Viscous Flow Dr. Afsaneh Mojra
Form drag vs. friction drag:
External Viscous Flow Dr. Afsaneh Mojra

10. External Viscous Flow Dr. Afsaneh Mojra
Form drag coefficient:
External Viscous Flow Dr. Afsaneh Mojra

11. External Viscous Flow Dr. Afsaneh Mojra
Form drag coefficient:
External Viscous Flow Dr. Afsaneh Mojra

12. External Viscous Flow Dr. Afsaneh Mojra
Drag coefficient for a sphere:
External Viscous Flow Dr. Afsaneh Mojra

13. Drag coefficient variation vs. flow regime:

14. External Viscous Flow Dr. Afsaneh Mojra
Vortex shedding behind a cylinder:
External Viscous Flow Dr. Afsaneh Mojra

15. External Viscous Flow Dr. Afsaneh Mojra
Vortex shedding behind a cylinder:
External Viscous Flow Dr. Afsaneh Mojra

16. External Viscous Flow Dr. Afsaneh Mojra
Vortex shedding behind a cylinder:
External Viscous Flow Dr. Afsaneh Mojra

17. External Viscous Flow Dr. Afsaneh Mojra
Vortex shedding behind tandem cylinders:
External Viscous Flow Dr. Afsaneh Mojra

18. External Viscous Flow Dr. Afsaneh Mojra
Drag coefficient for a cylinder:
External Viscous Flow Dr. Afsaneh Mojra

19. External Viscous Flow Dr. Afsaneh Mojra
Drag coefficient for a symmetric airfoil:
External Viscous Flow Dr. Afsaneh Mojra

20. External Viscous Flow Dr. Afsaneh Mojra
Angle of attack for a symmetric airfoil:
External Viscous Flow Dr. Afsaneh Mojra