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Simplifying the Use of Pipe-flow Friction-Factors

| By Jagadeesh Sonnad University of Oklahoma Health Sciences Center Chetan T. Goudar Bayer Healthcare

The Nikuradse-Prandtl-von Karman (NPK) equation is the most widely used expression to determine friction factors for fluid flow in smooth pipes [1–3]. It implicitly relates the friction factor (expressed here as f; sometimes called λ) to…