Q
For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is________________?
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A
A. Directly proportional to reynolds number and independent of pipe wall roughness
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B
B. Directly proportional to pipe wall roughness and independent of reynolds number
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C
C. Inversely proportional to reynolds number and indpendent of pipe wall roughness
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D
D. Inversely proportional to reynolds number and directly proportional to pipe wall roughness
Correct Answer:
C. C. Inversely proportional to reynolds number and indpendent of pipe wall roughness
