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Low Flow in Pipes- posted in Ankur's blog

Friction Factor

Started by Praj06, Oct 04 2012 12:19 PM

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#1 Praj06

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Posted 04 October 2012 - 12:19 PM

In what situation is it possible that for turbulent flow friction factor for rough pipe is same that of the smooth pipe?

#2 katmar

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Posted 04 October 2012 - 01:51 PM

Anywhere a horizontal line on the Moody chart ( see http://en.wikipedia....ody_diagram.jpg ) crosses both the laminar flow line and the turbulent flow line the friction factors will be the same. This can only happen for e/D > 0.005 (approximately).

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