Page 117 - ebook fluid mechanics_finalize

FLUID MECHANICS

Losses of energy in pipe line are due to :

a) shock loss at sudden enlargement

b) shock loss at sudden contraction

c) frictional resistance to flow

d) loss at entry/inlet

e) loss at rounded outlet

5.2 TYPES OF HEAD LOSS

5.2.1 Shock loss at sudden enlargement

Figure 5.2 : Shock Loss At Sudden Enlargement

Figure 5.2 shows the loss of head when a pipe undergoes a sudden increase in
diameter. To calculate the loss the following equation is given.

(v − v ) 2

Loss of head at enlargement, hL = 1 2
2 g

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