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Question
Explain Why Nozzles are made convergent and Divergent?
 Question Submitted By :: Mechanical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
In the convergent part pressure decreases and hence
velocity increases according to Bernouli's theorem . hence
Nozzles are made convergent .
convergent nozzles are used to get sonic velocity .when
requirement is more than sonic velocity convergent-
divergent nozzle are used,with a little loss due to
sepertation.
 
Is This Answer Correct ?    8 Yes 0 No
Soumen Sarkar
 
Answer
# 2
nozzels are made convergent divergent for maximum mass flow
rate.
 
Is This Answer Correct ?    11 Yes 4 No
Gaurav
 
 
 
Answer
# 3
as we know when the area decreases the velocity increases
so convergent section are used to increase the velocity
and divergent section are used to reduse the friction losses
 
Is This Answer Correct ?    2 Yes 0 No
Vivek
 
Answer
# 4
increase the velocity of fluid or other liquid 
Is This Answer Correct ?    9 Yes 8 No
Bakiyaraj
 
Answer
# 5
convergent portion will increase velocity. divergent
portions are to reduce losses due to seperation
 
Is This Answer Correct ?    6 Yes 5 No
Amjed
 
Answer
# 6
during convergent portion, because of the own inertia of
the fluid it creats venacontracta. to reduce the friction
the divergent portion is provided.
 
Is This Answer Correct ?    3 Yes 2 No
Arvind Yeram
 
Answer
# 7
in order to increase the velocity of flow of fluid nozzles r made convergent in shape

while where there is necissity to get high pressure of water they r made divergent
 
Is This Answer Correct ?    3 Yes 2 No
Akash Patel
 
Answer
# 8
As we know from pascal law that PV=constant
and we also AV=constant which is volume flow rate so
whenever we are decreasing area at that region velocity
increases and we get required jet velocity

but where as in divergents we increase area decreasing
velocity and finally we get more pressure.
 
Is This Answer Correct ?    4 Yes 8 No
Pa Srikanth
 

 
 
 
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