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Forces Due To Flow Through Pipe’s Bends(Mechanical Fluids)

Joshua Jesse Karubaba

140!!""!0

Te#ni# Ki$ia

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Soal

Exhaust (assumed to have the properties ofstandard air) leaves the 4-ft-diameter chimney

shown in figure the below with a speed of 6 ft/s.ecause of the wind! after a few with the speedof the wind! "# ft/s. $etermine the hori%ontal

component of the force that the blowing windputs on the exhaust gases.

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Diketahui

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Penyelesaian

 Asumsi :

&teady state -'

in   in  out  out  * +-

*

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Penyelesaian

,ada sumbu x

0 % 0 - out  out  *

+out  out  +

 xx ..(")

out  in arena asumsinya steady state! sehingga

out - in

out  0udara . 1 in .  in

out  (2.236# lbm/ft x (5/4 x (4ft)) x 6ft/s) #.637 lbm/s

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Penyelesaian

embali 8e persamaan (") out  out 

 +x

#.637 lbm/s . "# ft/s . . lbm.ft/s  +x

+x .64# lbf