Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 6 (Q.No. 7)
7.
Given that g = acceleration due to gravity and R = hydraulic mean depth, the Darcy Weisbach friction factor is related to Manning's rugosity coefficient 'n' as
Discussion:
3 comments Page 1 of 1.
Rahul verma said:
2 years ago
C = 1/n R^1/6.
C = (8g/f)^1/2.
1/n R ^ 1/6 = (8g/f) ^ 1/2.
1/n^2 R^1/3 = 8g/f.
f = 8gn^2/R^1/3.
C = (8g/f)^1/2.
1/n R ^ 1/6 = (8g/f) ^ 1/2.
1/n^2 R^1/3 = 8g/f.
f = 8gn^2/R^1/3.
Ram said:
7 years ago
Here, CN = R^1/6, C^2 =8g/f solve these two equations, we get the answer.
Priya said:
8 years ago
Explain it.
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