Logarithmic Correlations For Turbulent Pipe Flow Of Power Law Fluids

Details Logarithmic Correlations For Turbulent Pipe Flow Of Power Law Fluids Logarithmic Correlations For Turbulent Pipe Flow Of Power Law Fluids

2010-07-06

arxiv.org/abs/1007.0789v1

Physics

Fluid Dynamics

13 pages, 4 figures

Scientific paper

This paper uses the estimates of phase-locked parameters at the onset of bursting presented in a companion paper to derive logarithmic correlations for turbulent friction factor losses in time-independent power law fluids. Two different techniques for analysis were used. They gave logarithmic correlations with different coefficients. But both correlations predicted 264 data points of friction factors published in the literature with a standard error of 1.3%. The derivations show how modern understanding of coherent structures embedded in turbulent flow fields can be used to derive engineering correlations for head losses. Key words: Friction factor, turbulent, logarithmic correlations, power law, non-Newtonian

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