Abstract
IT is well known, from the results obtained by Stanton and Pannell, that the resistance, R, in dynes per square centimetre at the surface of a pipe of diameter d, carrying any fluid of density ρ, and viscosity a, at a mean velocity ρ, is given by R/ρμ2=f(ρud/μ)=L, say. Prof. Lees has given a well-known formula for L, namely, L=0.0763(μ/d)0.35+0.0009, and this function is accordingly sometimes known as Lees' function.
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EAGLE, A. The Resistance of Pipes of ‘Negative’ Diameters. Nature 122, 14 (1928). https://doi.org/10.1038/122014a0
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DOI: https://doi.org/10.1038/122014a0
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