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Water flows steadily through the round pipe in the figure. The entrance velocity is Vo. The exit velocity approximates turbulent flow, u = umax(1 −

Water flows steadily through the round pipe in the figure. The entrance velocity is Vo. The exit velocity approximates turbulent flow, u = umax(1 − r/R) 1/7. Determine the ratio Uo/umax for this incompressible flow.

r=R t. u(r) x=0 x=L

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