Transition length for turbulent flow in smooth pipe is equal to _____________ times the pipe diameter?
Correct answer: C. 50
- A. 0.5
- B. 5
- C. 50
- D. 500
Explanation
The turbulent entrance or transition length in a smooth pipe is commonly estimated as about 50 pipe diameters. This is much longer than the approximately 0.5D to 5D range often associated with laminar entrance flow.
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