Lecture9_6 - 12/2/2010 AME 331 Introduction to Fluid...

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12/2/2010 1 AME 331 Introduction to Fluid Mechanics Chapter 9: External Incompressible Viscous Flow Prof. Jesse Little University of Arizona 12/3/10 1 Lecture Preview and Assignments Today 9.8 Research and Review next week HW 11 due today at 2pm HW 12 due Friday 12/10 Can be submitted by email (PDF only) Movies Last time…. 2
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12/2/2010 2 Lift (9-8) Drag is often the most significant force in many external flow problems Lift is generally less significant, but in some cases it is very important (airfoils) Like drag coefficient, we also have a lift coefficient, C L We again use planform area in the denominator We said drag coefficient was a function of? The same goes for lift coefficient, but in most applications the primary factor is shape. 3 Lift (9-8) Lift can be explained using Bernoulli (other ways as well) It is generally produced by creating different pressure distributions on top and bottom surface. Airfoils and Angle of attack,
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Lecture9_6 - 12/2/2010 AME 331 Introduction to Fluid...

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