previous    next

Flow in a streamtube

In general ΔW1 ≠ ΔW2 Hence, by energy conservation that difference must have gone somewhere. Here, we assume that the difference between the work recieved by the amount of fluid under consideration ΔW1 and the work delivered by the amount of fluid under consideration ΔW2 is invested in the total kinetic energy of the amount of fluid under consideration. Ekin(t+Δt) - Ekin(t) = ΔW1 - ΔW2

streamtube