Chemical Engineering - Fluid Mechanics - Discussion

Discussion Forum : Fluid Mechanics - Section 5 (Q.No. 42)
42.
Friction factor for a hydraulically smooth pipe at NRe = 2100 is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will
increase.
decrease.
remain unchanged.
increase or decrease depending on the pipe material.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
10 comments Page 1 of 1.

Remo said:   8 years ago
Yes, it is C.
(1)

Nilesh said:   3 years ago
C is the right answer.
(1)

Sujit said:   9 years ago
The answer should be C. The friction factor for smooth pipe dependes on reynolds number only.

Prasanjit said:   9 years ago
Yes, it should be c.

Adarsh R said:   8 years ago
The answer is C.

Guddu said:   8 years ago
Yes, C is correct.

Arbind prasasd said:   8 years ago
The Answer should be B, as per Moody chart.

Kartik said:   7 years ago
For laminar flow, the friction factor depends only on Reynold number so answer should be C.

Alpesh Solanki said:   5 years ago
As per the moody chart, the friction factor is directly proportional to the relative roughness answer should be B.

Anoop Kumar Sengar said:   4 years ago
Already Hydraulically smoothed pipe not possible further smoothened, so the answer is C.

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