9/30/2010
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AME 331
Introduction to Fluid Mechanics
Chapter 5: Differential Analysis of Fluid
Motion
Prof. Jesse Little
University of Arizona
10/1/10
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Lecture Preview and Assignments
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Today
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Chapter 5.3 (skipped 5.2)
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Read Chapter 5.3 for next time
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We will spend a couple lectures on this
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Homework 5 due today
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Exam 1 Monday
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Covers Chapters 14
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Open book, open notes
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Brief review on vectors is posted on d2l
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9/30/2010
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Kinematics (53)
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We are on our way to deriving differential equations for
momentum
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We need a brief stop along the way to understand what
happens to fluid particles as they move
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We will impose the restriction that the sides remain straight.
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This is an ok assumption since we have both an
infinitesimal time step and particle
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Kinematics (53)
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This leaves four possible components of motion
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Note that only deformation changes the angles
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This is especially important since it give rise to shear.
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 Fall '08
 ZOHAR
 Fluid Dynamics, Fluid Mechanics, Differential Analysis of Fluid

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