Chemical Engineering - Fluid Mechanics - Discussion

Discussion Forum : Fluid Mechanics - Section 2 (Q.No. 33)
33.
Boundary layer separation occurs when the
pressure reaches a minimum.
cross-section of the channel is reduced.
valve is closed in a pipeline.
velocity of sound is reached.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
7 comments Page 1 of 1.

Raiss said:   4 years ago
A is the correct answer as pressure decreases with increase in Area.

Moreover, boundary layer separation occurs when fluid observes sudden area increase.
(2)

Anomee said:   7 years ago
Due to adverse pressure gradient kinetic energy decrease potential energy increases thus boundary layer forms and eddies form which decelerate the flow also turbulence increases.

When area reduced pressure increases.

Amal Raj said:   7 years ago
Adverse pressure gradient is correct I think.

Vinay said:   9 years ago
@All.

I am sure that B is correct.

Surya Teja said:   9 years ago
Maybe due to reverse in pressure gradient.

Ankit Garg said:   1 decade ago
I think answer is A. Because when pressure gets low, boundary layer gets separated.

Palash said:   1 decade ago
I am not sure but the boundary layer separation concept is used in conical expander in which cross sectional area increases not decreases.

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