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class 18 to be posted

class 18 to be posted - External Flow Impinging Jets and...

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Click to edit Master subtitle style 8/13/11 External Flow: Impinging Jets and Packed Beds Class 18 Chapter 7 Section 7.7,8

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8/13/11 Clarification of Friday’s problem:
8/13/11 Jets Gas Jet Impingement Characterized by large convection coefficients and used for cooling and heating in numerous manufacturing, electronic and aeronautic applications. Flow and Heat Transfer for a Circular or Rectangular Jet: Significant Features: Mixing and velocity profile development in the free jet . Stagnation point and zone . Velocity profile development in the wall jet .

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8/13/11
8/13/11 What is Ar for a single round nozzle? a) D2/r2 b) D2/4r2 c) 1 d) D/4 e) D2/4S2

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8/13/11 Four different correlations based on geometry. One round nozzle: ( 29 [ ] 2 2 2 / 1 2 2 / 1 2 / 1 2 / 1 55 . 0 2 / 1 42 . 0 4 ) 6 / ( 2 . 0 1 2 . 2 1 2 Re 005 . 0 1 Re 2 Pr r D A A D H A A G D H A G Nu r r r r = - = - = + =
8/13/11 Four different correlations based on geometry. Array of round nozzles: 2 2 05 . 0 6 2 / 1 2 / 1 2 2 / 1 2 / 1 3 / 2 42 . 0

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class 18 to be posted - External Flow Impinging Jets and...

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