Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 7 (Q.No. 3)
3.
According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)
Discussion:
36 comments Page 1 of 4.
Yash Agarwal said:
5 years ago
The right Answer is D.
Praveen tiwari said:
6 years ago
A is right because friction factor is 4times greater than the coefficient of friction and here in question coefficient of friction given so A is right.
Kishore raj said:
6 years ago
Darcy friction factor = flv^2/2gd.
Fanning factor = 4flv^2/2gd.
Fanning factor = 4flv^2/2gd.
Bhanu said:
6 years ago
4flv^2/2gd is the correct answer.
Vin said:
6 years ago
Both A and D are correct as f in both the cases known as Darcy coefficient or coefficient of friction.
And both the formula introduced by Darcy only.
And both the formula introduced by Darcy only.
Siraj (NMIT) said:
5 years ago
The correct one is D. 4flv^2/2gd
According to Darcys or Weisbach equation on major energy loss.
According to Darcys or Weisbach equation on major energy loss.
Asif said:
5 years ago
D is the correct answer. I too agree.
Kajal Patil said:
5 years ago
Answer D is correct.
Because they clearly mentioned f is Darcy's coefficient.
If they metion f' as a friction factor, then only Answer A will be correct.
Because.
f' = 4f.
Because they clearly mentioned f is Darcy's coefficient.
If they metion f' as a friction factor, then only Answer A will be correct.
Because.
f' = 4f.
Sqasi said:
5 years ago
f' to be 4f only if the flow is turbulent
For laminar flow f'=f.
For laminar flow f'=f.
Salahuddin said:
7 years ago
A is the correct one.
Darcy friction factor is four times fanning friction factor.
Darcy friction factor is four times fanning friction factor.
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