Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 2 (Q.No. 14)
14.
The hydraulic gradient line may be above or below the centre line of the pipe.
Discussion:
27 comments Page 3 of 3.
Rajat Ojha said:
9 years ago
As per my knowledge, True is the correct answer.
Rahul said:
10 years ago
Also in case of pump.
ZXC said:
1 decade ago
At points where the HGL passes through the center line of the pipe, the pressure is zero. If the pipe lies above the HGL, there is a vacuum in the pipe, a condition that is often avoided, if possible, in the design of piping systems; an exception would be in the design of a siphon.
ZXC said:
1 decade ago
In general, if the HGL is above the crown of the pipe, pressure flow hydraulic calculations are appropriate. Conversely, if the HGL is below the crown of the pipe, open channel flow calculations are appropriate.
Bhargavi said:
1 decade ago
For positive pressure in the pipe, the H.G.L. is above the centre line of pipe and for negative pressure in the pipe, H.G.L. is below the centre line of the pipe. So I think True is correct answer.
SHIBU.S said:
1 decade ago
Pipeline system is materialized by the energy grade line. The hydraulic grade line is lower than the energy line by the velocity head.
Neel said:
1 decade ago
Why the answer is false please give some explanation?
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