165 citations · 1.1k across the 19 of their papers we have counts for
19 papers
Experimental study of a turbulent boundary layer with a rough-to-smooth change in surface conditions at high Reynolds numbers
Mogeng Li, Charitha M. de Silva, Daniel Chung +3
This study presents an experimental dataset documenting the evolution of a turbulent boundary layer downstream of a rough-to-smooth surface transition. To investigate the effect of…
Recovery of the wall-shear stress to equilibrium flow conditions after a rough-to-smooth step-change in turbulent boundary layers
Mogeng Li, Charitha M. de Silva, Amirreza Rouhi +4
This paper examines recovery of the wall-shear stress of a turbulent boundary layer that has undergone a sudden transition from a rough to a smooth surface. Early works of Antonia…
DNS-based characterization of pseudo-random roughness in minimal channels
Jiasheng Yang, Alexander Stroh, Daniel Chung +1
Direct numerical simulation is used to study turbulent flow over irregular rough surfaces in the periodic minimal channel configuration. The generation of irregular rough surface i…
Turbulent flow over transitionally rough surfaces with varying roughness densities
M. MacDonald, L. Chan, D. Chung +2
We investigate rough-wall turbulent flows through direct numerical simulations of flow over three-dimensional transitionally rough sinusoidal surfaces. The roughness Reynolds numbe…
Direct numerical simulation of high aspect ratio spanwise-aligned bars
M. MacDonald, A. Ooi, R. García-Mayoral +2
We conduct minimal-channel direct numerical simulations of turbulent flow over two-dimensional rectangular bars aligned in the spanwise direction. This roughness has been often des…
Characterizing the turbulent drag properties of rough surfaces with a Taylor--Couette setup
Pieter Berghout, Pim A. Bullee, Thomas Fuchs +5
Wall-roughness induces extra drag in wall-bounded turbulent flows. Mapping any given roughness geometry to its fluid dynamic behaviour has been hampered by the lack of accurate and…