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 …

Single-point measurements from towers in cities cannot properly quantify the impact of all
terms in the turbulent kinetic energy (TKE) budget and are often not representative of …

Large-eddy simulations (LES) are used to gain insight into the effects of trees on turbulence,
aerodynamic parameters, and momentum transfer rates characterizing the atmosphere …

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

Standalone urban canopy models attempt to replace the full-fledged atmospheric
representation with a simplified equivalent. In this study, we investigate the offline forcing of …

Abstract The one-dimensional (1D) Jensen model is probably the most often used model for
engineering analysis of wind turbine wakes. Identifying a more realistic shape function for …

We investigate rough-wall turbulent flows through direct numerical simulations of flow over
three-dimensional transitionally rough sinusoidal surfaces. The roughness Reynolds …

Cube arrays are one of the most extensively studied types of surface roughness, and there
has been much research on cubical roughness with low-to-moderate surface coverage …

Abstract Knowledge of the vertical wind-speed profile in cities is important for the
construction and insurance industries, wind energy predictions, and simulations of pollutant …