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FLUID MECHANICS
4.5.2 Application of Bernoulli’s Equation
Bernoulli’s equation can be applied to the following situations.
a. Horizontal / Normal Pipe
Example 4.7
36
m
Figure 4.7
Water flows through a pipe 36 m from the sea level as shown in figure 4.7. Pressure in the
2
pipe is 410 kN/m and the velocity is 4.8 m/s. Calculate total energy of every weight of
unit water above the sea level.
Solution to Example 4.7
Total energy per unit weight
p v 2
= z + +
2 g
410 10 3 ( ) 8.4 2
= 36 + +
1000 . 9 81 2 . 9 81
= 78 . 96 J / N
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