Surface roughness can significantly influence the fluid dynamics and heat transfer in
convective flows by inducing perturbations in the velocity profile which affect surface drag …

Reliable full-scale prediction of drag due to rough wall-bounded turbulent fluid flow remains
a challenge. Currently, the uncertainty is at least 10%, with consequences, for example, on …

While data-based approaches were found to be useful for subgrid scale (SGS) modeling in
Reynolds-averaged Navier-Stokes (RANS) simulations, there have not been many attempts …

Over the last 50 years the large-eddy simulation (LES) technique has developed into one of
the most prominent numerical tools used to study transport processes in the atmospheric …

Atmospheric boundary-layer dynamics over heterogeneous surfaces is significant to a wide
array of geophysical and engineering applications. Yet, despite over five decades of intense …

Large-scale secondary flows can sometimes appear in turbulent boundary layers formed
over rough surfaces, creating low-and high-momentum pathways along the surface (Barros …

The occurrence of turbulent pulsations in straight pipes of noncircular cross-section leads to
the situation, when the average velocity field includes not only the longitudinal component …

The effect of spanwise wavelength of surface heterogeneity on turbulent secondary flows Page
1 J. Fluid Mech. (2020), vol. 894, A7. c The Author(s), 2020. Published by Cambridge University …

A theoretically based relationship for the Darcy–Weisbach friction factor for rough-bed open-
channel flows is derived and discussed. The derivation procedure is based on the double …

The occurrence of secondary flows is investigated for three-dimensional sinusoidal
roughness where the wavelength and height of the roughness elements are systematically …