Problem 4.119 - Then V z ( ) V 2 2 g z + = Also V 4 D 2 V 4...

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Problem *4.119 [Difficulty: 3] Given: Water faucet flow Find: Expressions for stream speed and diameter; plot Solution: Basic equation: Bernoulli p ρ V 2 2 + gz + const = Assumptions: Laminar, frictionless, uniform flow The given data is D 0 5mm = h5 0 m m = Q 1L 3 min = Q 0.333 L min = The initial velocity is V 0 Q π 4 D 0 2 = V 0 0.283 m s = Then applying Bernoulli between the exit and any other location p atm ρ V 0 2 2 + p atm ρ V 2 2 + gz
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Unformatted text preview: Then V z ( ) V 2 2 g z + = Also V 4 D 2 V 4 D 2 = so D z ( ) D 1 2 g z V 2 + 1 4 = Evaluating at h V h ( ) 1.03 m s = D h ( ) 2.62 mm = 2.5 1.5 0.5 0.5 1.5 2.5 40 30 20 10 Diameter (mm) Height (mm) 10 20 30 40 50 0.25 0.5 0.75 1 1.25 z (mm) V (m/s)...
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This note was uploaded on 10/19/2011 for the course EGN 3353C taught by Professor Lear during the Fall '07 term at University of Florida.

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