5.2 Flow To Atmosphere

FLOW TO ATMOSPHERE :-

Energy Equation from A to B : 

Equation will be eliminated and become,

Thus, equation will be

The equation will be derived and become

                                                 Then, 

Example :- 

Determine the discharge of water flows in the system.

The information given is 

hS  = zA + zB = 10 m 

f = 0.005

L = 100 m

D = 0.5 cm 

Using this equation,

Since, 

k = 1.5 + fL/D = 1.5 + (0.005 x 100)/0.005 = 101.5

Solution is, 

= 1.39m/s

Since 

=