Transcription of Pipe flow friction, small vs. big pipes - …
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Pipe flow friction, small vs. big pipes - …
1 friction small vs large pipes J. Chaurette May 2016 It is an interesting fact that friction is higher in small pipes than larger pipes for the same velocity of flow and the same length. friction is determined by the Darcy-Weisbach equation which in turn relies on the friction parameter given from the Colebrook equation. )/(2)())/((120010022sftginDsftvfpipeofft fluidftLHF Darcy-Weisbach 123725110fDRfe Colebrook In the latter equation the relative roughness /D is a major component of friction .
2 As we can see, the friction factor is low for large pipes and high for small ones. It is as much as 50 times higher for the velocity range and pipe sizes considered.
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