Which of the following statements is correct?
A. Lower critical Reynolds number is of no practical significance in pipe flow problems.
B. Upper critical Reynolds number is significant in pipe flow problems.
C. Lower critical Reynolds number has the value 2000 in pipe flow
D. Upper critical Reynolds number is the number at which turbulent flow changes to laminar flow.
Answer:A
Which of the following statements is correct?
A. Lower critical Reynolds number is of no practical significance in pipe flow problems. B. Upper critical Reynolds number is significant in pipe flow problems. C. Lower critical Reynolds number has the value 2000 in pipe flow D. Upper critical Reynolds number is the number at which turbulent flow changes to laminar flow.