Page 120 - ebook fluid mechanics_finalize

FLUID MECHANICS

(v − v ) 2
Head loss of enlargement, hL = A B
2 g

( 8197.3 − . 1 697 ) 2
=
2 ( 81.9 )

= . 0 2294 m of water

b) Difference in pressure;

p A + v A 2 + z = p B + v B 2 + z + h
g  2 g A g  2 g B L

zA=zB

(p − p B ) = v B 2 − v A 2 + h
A
g 2 g L

( 697.1 2 − . 3 8197 2 )
p − p = + . 0 596 (9810 )
A
B
19 . 62
2
3602= . 56 N / m

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