1 The flow is steady, and the frictional effects are negligible.
2 The weight of the elbow and the water in it is negligible. 3 The water is
discharged to the atmosphere, and thus the gage pressure at the outlet is
zero. 4 The flow is turbulent and fully developed at both the inlet and outlet
of the control volume, and we take the momentum-flux correction factor to
be b 1.03.
vertical