Chemical Engineering - Fluid Mechanics - Discussion


In which of the following cases, it is possible for flow to occur from low pressure to high pressure ?

[A]. Flow of liquid upward in a vertical pipe.
[B]. Flow through a converging section.
[C]. Flow of air downward in a pipe.
[D]. Impossible in a constant cross-section conduit.

Answer: Option B


No answer description available for this question.

Faizan said: (Dec 25, 2016)  
In converging section area is greater at the start so is pressure and as flow passes through small area pressure is lower in that region. Flow is actually from higher pressure to lower pressure how option B can be the answer?

Bhagath said: (Feb 23, 2017)  
Flow through a diverging section should be the answer.

So, in this case it should be option D.

Owais said: (Dec 11, 2018)  
Pressure through a converging section increases in supersonic conditions. Decreases otherwise.

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