Evaluate the net momentum flux through the channel of Problem 4.35. Would you expect the outlet pressure to be higher, lower, or the same as the inlet pressure? Why?

Data From Problem 4.35

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4.35 Water enters a two-dimensional, square channel of constant width, h=75.5 mm, with uniform velocity, U. The channel makes a 90 bend that distorts the flow to produce the linear velocity profile shown at the exit, with Vmax = 2 Vmin. Evaluate Vmin, if U = 7.5 m/s.