Page 135 - ebook fluid mechanics_finalize

FLUID MECHANICS

Applying Bernoulli’s Equation to A and B for unit weight

Total energy at A = total energy at B + losses

Pressures at A and B are equal and if the reservoirs are large the velocities will be zero.
Taking datum level at B,

H = 0 + losses

v 2
6 = 15 . 86 2
2 g

so

6 2g
v =
2
15 . 86

2= . 72 m s /

 d 2
Discharge = v
4

 ( 225.0 ) 2
= ( 72.2 )
4

0= . 185 m 3 s /

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