Review of Hydraulic Roughness Scales in the Fully Rough Regime

399 citations recorded by the source corpus.

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

Numerical and experimental study of mechanisms responsible for turbulent secondary flows in boundary layer flows over spanwise heterogeneous roughness (2015, methodology): “Statistical attributes including roughness height, root-mean-square (r.m.s.) roughness and roughness skewness are commonly used in such parametrizations (Schultz & Flack 2009; Flack & Schultz 2010; Mejia-Alvarez & Christensen 2010).”
Estimation and prediction of the roughness function on realistic surfaces (2014, background): “The smooth-wall profile in the current LES collapses with the experimental data obtained by Schultz and Flack [31].”
Exponential roughness layer and analytical model for turbulent boundary layer flow over rectangular-prism roughness elements (2016, background): “…sand-grain roughness height, friction factor (Simpson 1973), effective slope (Napoli, Armenio & De Marchis 2008; Schultz & Flack 2009), surface skewness factor (Flack & Schultz 2010) and examinations of Reynolds number similarity for rough walls (see, e.g., Flack, Schultz & Shapiro 2005).”
Explicit solutions for turbulent flow friction factor: A review, assessment and approaches classification (2019, methodology): “[12] Nikuradse J. Gesetzmessigkeiten der turbulenten stromung in glatten rohren.”