Lecture6_2

Lecture6_2 - AME 331 Introduction to Fluid Mechanics...

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10/14/2010 1 AME 331 Introduction to Fluid Mechanics Chapter 6: Incompressible Inviscid Flow Prof. Jesse Little University of Arizona 10/15/10 1 Lecture Preview and Assignments Today Finish 6.2 then 6.3 Read Chapter 6.4 for next time Homework 6 due today Homework 7 posted tonight Question from last time about centripetal acceleration Comment on the Euler equation 2
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10/14/2010 2 Streamline Coordinates (6-2) Some perspective on these results s-direction Decreasing velocity means increasing pressure and vice versa n-direction Pressure increases in the direction outward from the center of curvature of the streamlines Remember this is inviscid flow 3 Hurricanes as Free Vortex (irrotational) Our discussion of incompressible, inviscid flow doesn’t apply to the eye, but outside of this region the flow can be modeled as a free vortex (see example 5.6 in text) 4 http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/mtr/hurr/stages/cane/pswd.rxml
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10/14/2010 3 Lecture Example 6-2 6.27: To model the velocity distribution in a curved inlet section of a wind tunnel, the radius of curvature of the streamlines is expressed as R=LR o /2y. As a first approx, assume the air speed along each streamline is V=20 m/s. Evaluate the pressure change from y=0 to the tunnel wall at
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Lecture6_2 - AME 331 Introduction to Fluid Mechanics...

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