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# 4.29 - 4.29 Water enters a 5—ft—wide l—l’t-deep...

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Unformatted text preview: 4.29 Water enters a 5—ft—wide, l—l’t-deep channel as shown in Fig. 134.29. Across the inlet the water velocity is 6 l’t/s in the center portion of the channel and l [Us in the remainder of it. Farther downstream the water ﬂows at it uniform 2-l‘t/s velocity across the entire channel. The ﬁxed control volume ABCD coin- cides with the system at time t = 0. Make it sketch to indicate ‘ 6 W3 (a) the system at time t = 0.5 s and (b) the ﬂuid that has entered 'f and exited the control volume in that time period. ( ~ Control surface I FIGURE P4.29 During 71/79 't‘ =05: {We Ihfc/Va/ Me f/I/io/ 7774/ W: 4/0/79 //'ﬁe BC 4f f/me {=0 54.)“ Mal/9d 7’0 29/78 1'77”?! 4 d/J‘ildi/ce ﬂ = l/ i = 251975 (0.5:) = Hf, SIM/WW) port/om 0/ Me {/0121 44/0/79 It?» 190 ﬂat/e Mal/ed ﬂ:/#(o.ss) = 0.57791 and 1= 539! (0.5:) = 3H. 7%: (HIV/WES Me (If! m 6 £1 f/w‘a’ dream: do ”0f ”Mr W life/W/Wy/e dun/by 2% 0.55 791779 Ih/eﬂt/aﬂ See {)‘yme be/ow, . I I .I l I Hm Mai/1?}. __,| , .2,“ If}! “.“’.”-T._‘T'-:-‘u ‘ "5 entered {rt-4. 3H; 1....» ‘0 l ’ {VI/I‘d, MW} T/Wlllzvl ‘5 _‘.~-'-_' -_’;';I ' . . exiled ath/ o a e t: " .45... 0.5H l 1; WW .3 '“ l;lz:*=.=.—.—_::—=: :;'_--:.._-_-=..=-'-.=..:l""“'g / D D! C C _._._ _ __ fixed can {fail W/Vma ........... syri‘em m‘ z‘=0.55 \$~24 ...
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