Chemical Engineering - Fluid Mechanics - Discussion

4. 

What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta ?

[A]. 0.64
[B]. 1.65
[C]. 0.32
[D]. 0.94

Answer: Option A

Explanation:

No answer description available for this question.

Yogi said: (Sep 2, 2016)  
The coefficient of contraction It is the ratio between the area of the jet at the vena contracta to the area of the orifice.

Cc = Area at vena contracta/ Area of orifice.

The typical value may be taken as 0.64 for a sharp orifice (concentric with the flow channel).

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