At time \(t=0\) the level of water in tank \(A\) shown in Fig. P8.18 is \(2 \mathrm{ft}\) above that in \(\operatorname{tank} B\). Plot the elevation of the water in tank \(A\) as a function of time until the free surfaces in both tanks are at the same elevation. Assume quasisteady conditionsthat is, the steady pipe flow equations are assumed valid at any time, even though the flowrate does change (slowly) in time. Neglect minor losses. Verify and use the fact that the flow is laminar.

Figure P8.18

Transcribed Image Text:

-3 ft 2 ft atr=0 B -25 ft- 0.1-in. diameter, galvanized iron -3 ft- A