A tank of water 4 m in diameter and 7 m deep is to be drained by a 5-cm-diameter exit
Chapter 6, Problem p6.107(choose chapter or problem)
A tank of water 4 m in diameter and 7 m deep is to be drained by a 5-cm-diameter exit pipe at the bottom, as in Fig. P6.107. In design (1), the pipe extends out for 1 m and into the tank for 10 cm. In design (2), the interior pipe is removed and the entrance beveled, Fig. 6.21, so that K < 0.1 in the entrance. (a) An engineer claims that design (2) will drain 25 percent faster than design (1). Is this claim true? (b) Estimate the time to drain of design (2), assuming f < 0.020. (1) (2)
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