3.51 - 3.5 3.51 Water flows in a rectangular channel that...

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Unformatted text preview: 3.5] 3.51 Water flows in a rectangular channel that is 05 m wide as shown in Fig. P3.51. The upstream depth is 70 mm. The water surface rises 40 mm as it passes over a portion where the channel bottom rises 10 mm. lf viscous effects are negligible, what is the flowrate? l FIGURE P3.51 2 .2. $4,331; +zia«%+%+zzz W/M/‘E? {2,20, [1:0, 21:62.07/77, (I) and 2L;L :- ('0.o/ +0.]0)m = 0.//m A150] Alwzflzyz or {as-5’: I=MV1 :0'7VI 777115, 57(1) becomes [I~0.71]\/,2=2(4.9/%)(o.//~o.o7),,, or VI: [25,1301 Hence, 3 Q =29, V, : (0.07m)(0.5m) (1.24%) 1 0.0434,? —__—..._._.__._... —..——_._—__....... ...
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