P 2

where plug flow has been assumed. Using Eq. (10-6) to eliminate V1 and neglecting the friction loss, Eq. (10-7) can be solved for V2:

where AP = P2 — P1 and p = d2/D1 (where d2 is the minimum diameter at the throat of the venturi or nozzle). To account for the inaccuracies introduced by assuming plug flow and neglecting friction, Eq. (10-8) is written

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