Dept of Mechanical Engineering

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Presentation transcript:

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

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

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

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

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

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

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

External Viscous Flow Form drag vs. friction drag:

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

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

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

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

Drag coefficient variation vs. flow regime:

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

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

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

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

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

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

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

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