Problem 4.146 - Problem 4.146 [Difficulty: 3] Given: Vaned...

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Problem 4.146 [Difficulty: 3] Given: Vaned cart with negligible resistance Find: Initial jet speed; jet and cart speeds at 2.5 s and 5 s; what happens to V - U? Solution: Apply x momentum Assumptions: 1) All changes wrt CV 2) Incompressible flow 3) Atmospheric pressure in jet 4) Uniform flow 5) Constant jet area Given data ρ 999 kg m 3 = M5 k g = A5 0 m m 2 = a 2.5 m s 2 = θ 120 deg = Then a M u 1 ρ VU () A [] u 1 ρ A + = where u 1 = and u 2 ( ) cos θ = Hence aM ρ 2 1 cos θ A =
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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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