Problem 4.64 - Problem 4.64 Given Fully developed flow in...

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Problem 4.64 [Difficulty: 1] Given: Fully developed flow in pipe Find: Why pressure drops if momentum is constant Solution: Basic equation: Momentum flux in x direction Assumptions: 1) Steady flow 2) Fully developed flow Hence F x p L τ w A s = 0 = pL τ w A s = where p is the pressure drop over length L, τ w is the wall friction and As is the pipe surface area
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