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Question
If a nozzle is so shaped that the velocity of flow along centre line changes from 1.5 m/sec to 15 m/sec in a distance of 0.375 m, what will be magnitude of convective acceleration at the beginning?
A.
24 m/s2
B.
42 m/s2
C.
54 m/s2
D.
74 m/s2
Answer ( Option C)

54 m/s2

Solution

       
For flow along a stream line acceleration is given as 
   
Since V = f(s) only, for steady flow therefore
     
Given, 
    V1 = 1.5 m/s, V2 = 15 m/s, and ds = 0.375 m
         
So acceleration of fluid at 1 is
       

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