# 1. An element of volume for the separated up-flow of water and steam in a channel is shown in the…

1. An element of volume for the separated up-flow of water

and steam in a channel is shown in the figure. Use the conservation equation of

momentum at steady-state and directly derive Equation Va.2.4.

2. Derive _Pacc by applying the momentum equation

between inlet and outlet. [Hint: F = _(momentum flux). Use F = A_P

and substitute for momentum out = m f Vf + m gvg

and for momentum in = mi Vi. Then replace each velocity by mass flow rate

divided by _A and introduce _ and x to replace area and

mass ratios].