Civil Engineering - Water Resources Engineering - Discussion
Discussion Forum : Water Resources Engineering - Section 1 (Q.No. 28)
28.
If y is the depth of water at any section, then the mean velocity is
Discussion:
14 comments Page 1 of 2.
Krunal said:
7 years ago
max. velocity occur at depth 0.05y to 0.15y below free surface.
mean velocity occur at an average of the velocities measured at 0.2y and 0.8y depth from the free surface.
So, the answer is nearly from 0.6y to 0.7y.
mean velocity occur at an average of the velocities measured at 0.2y and 0.8y depth from the free surface.
So, the answer is nearly from 0.6y to 0.7y.
(1)
Sk Saber said:
5 years ago
In Single point observation method: in shallow streams of depth up to 3m, the velocity measured at 0.6times the depth of flow below the water surface is taken as avg velocity.
(1)
Jaykantariya said:
6 years ago
Normal Indian practise is to measure the velocity at 0.6 depth and take it as the mean velocity.
Mean velocity = 1/10(Vs +2V*0.2+2V*0.4+2V*0.6+2V*0.8+Vbottom).
Mean velocity = 1/10(Vs +2V*0.2+2V*0.4+2V*0.6+2V*0.8+Vbottom).
Chandu said:
9 years ago
Due to surface currents max velocity does not occur at surface max velocity occurs at 0.25y
Mean velocity at V 0.6y = (V 0.8y+V 0.6y)/2.
Mean velocity at V 0.6y = (V 0.8y+V 0.6y)/2.
Gadisa said:
6 years ago
Can you explain how its become 0.6y? Please explain it clearly.
Ansh Mishra said:
5 years ago
Not getting the solution. Anyone explain it in detail.
Raman said:
10 years ago
See the channel section with velocity distribution.
Chandu said:
7 years ago
For natural streams 0.6y.
For floods 0.5y.
For floods 0.5y.
Suman Debnath said:
1 decade ago
Can you explain how its becomes 0.6y?
Dvs said:
8 years ago
Yes, you are correct @Chandu.
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