Problem 4.158 - Problem*4.158[Difficulty 3 CS moving at...

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Problem *4.158 [Difficulty: 3] CS moving at speed U c d Given: Water jet striking moving disk Find: Acceleration of disk when at a height of 3 m Solution: Basic equations: Bernoulli; Momentum flux in z direction (treated as upwards) for linear accelerating CV p ρ V 2 2 + gz + constant = Assumptions: 1) Steady flow 2) Incompressible flow 3) Atmospheric pressure in jet 4) Uniform flow (All in jet) The Bernoulli equation becomes V 0 2 2 g0 + V 1 2 2 gz z 0 () + = V 1 V 0 2 2g z 0 z + = V 1 15 m s 2 2 9.81 × m s 2 03 m + = V 1 12.9 m s = The momentum equation becomes W Ma rfz w 1
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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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