Civil Engineering - Hydraulics - Discussion
Discussion Forum : Hydraulics - Section 3 (Q.No. 48)
48.
Manning's formula is used for
Discussion:
18 comments Page 1 of 2.
Pankaj dubey said:
6 years ago
V=1/n * R^2/3 * S^1/2.
Here;
v = Velocity.
n = Manning's Roughness Coefficient,
R = Hydraulic Radius,
S = Channel Slope or friction slope,
Note- Manning's Equation can be rearranged to solve for slope (S), which is termed the friction slope sf. The friction slope is part of the gradually varied flow used to solve for the water surface profile through a culvert.
Here;
v = Velocity.
n = Manning's Roughness Coefficient,
R = Hydraulic Radius,
S = Channel Slope or friction slope,
Note- Manning's Equation can be rearranged to solve for slope (S), which is termed the friction slope sf. The friction slope is part of the gradually varied flow used to solve for the water surface profile through a culvert.
Pratik said:
5 years ago
The Manning equation is a widely used and very versatile formula in water resources. It can be used to compute the flow in an open channel, compute the friction losses in a channel, derive the capacity of a pipe, check the performance of an area-velocity flow meter, and has many more applications.
(1)
Gurpreet Singh said:
8 years ago
No guys.
Option B is correct because in Manning equation n is roughness coefficient and it deals with the roughness of channel which means Manning equation deals with friction losses in open channel flow.
Option B is correct because in Manning equation n is roughness coefficient and it deals with the roughness of channel which means Manning equation deals with friction losses in open channel flow.
Prashant said:
8 years ago
No, the manning's formula used to describe velocity in open channels, it is does not depend upon friction and head loss anyway.
Basavaraj said:
7 years ago
Option A is correct because of Chezzy equation= √ (8g/f).
Nyam said:
8 years ago
I think its flow in open channels, though applicable to pipes.
RAVI RAJ ANAND said:
7 years ago
Answer is B, Chezy equation is used for flow in open channel.
Amir zada said:
4 months ago
For pipe Flow which equation is used? Please explain to me.
Sunny said:
4 years ago
Manning formula for head loss is;
H = n2.v2.l/r4/3.
H = n2.v2.l/r4/3.
(1)
Subhadeep said:
6 years ago
Please give the explanation of the answer.
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