Rao, Achanta Ramakrishna and Kumar, Bimlesh (2006) Friction Factor for Turbulent Pipe Flow. [Preprint]
By using Nikuradse’s experimental data on sand roughened pipes an universal resistance equation relating friction factor (\lamda), the Reynolds number (R) and relative roughness height (k/r) for the entire range of turbulent flow in pipes covering all the three roughness regimes viz., smooth, transition and rough is derived based on a simple characteristics length concept. With suitable modification such an equation is found to be equally valid for the case of commercially available pipe as well. A comparative analysis is presented on various important equations that are available in the literature with the present universal resistance equation and finally concluded that universal resistance is alone sufficient to describe pipe resistance.
|Keywords:||Frcition factor;Nikuradse experiment; Colebrook-White equation; Rough turbulent flow|
|Department/Centre:||Division of Mechanical Sciences > Civil Engineering|
|Date Deposited:||30 Nov 2007|
|Last Modified:||19 Sep 2010 04:34|
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