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Keywords: universal relations
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Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Fluids Eng. October 2007, 129(10): 1255–1267.
Published Online: May 16, 2007
... , in terms of new scaling parameter, viz., the roughness Reynolds number Re ϕ = Re ∕ ϕ (where ϕ is a nondimensional roughness scale), is a universal relation for all kinds of surface roughness. This means that Prandtl’s smooth pipe friction factor relation would suffice provided that the traditional Reynolds...