Exam_2_2004 - EAS 4101 - Aerodynamics Spring 2004 4/19/04,...

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EAS 4101 - Aerodynamics – Spring 2004 4/19/04, Exam #2 Name: ________________________ 1 Questions:(40 points total, 4 points each, unless otherwise marked) 1. When is flow in a boundary layer considered to be irrotational? 2. What does the Reynolds number represent the ratio of in terms of typical forces? 3. What are the normal/streamwise velocity boundary conditions for a viscous flow over a moving solid body? 4. Explain the assumption of “fully developed” in terms of flow physics for a flow in the z- direction. 5. Physically, what is true about the ratio of the viscous and inertial forces in a boundary layer?
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EAS 4101 - Aerodynamics – Spring 2004 4/19/04, Exam #2 Name: ________________________ 2 Questions continued: (40 points total, 4 points each, unless otherwise marked) 6. Compared to ideal flow, what are four specific effects of viscosity on the flow over a wing? 7. Draw a representative vs. L C for a thin, cambered finite wing and compare it to a vs. Le f f C for a thin, infinite cambered airfoil , please specifically comment about the differences in angle of attack intercept and lift slope for 2-D vs. 3-D bodies (8 points). 8. Draw a representative vs. L C for a thin, infinite cambered airfoil that displays leading edge stall and compare it to the vs.
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Exam_2_2004 - EAS 4101 - Aerodynamics Spring 2004 4/19/04,...

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