108 citations · 289 across the 3 of their papers we have counts for
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physics.flu-dyn2020★ 97 cited
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…
physics.flu-dyn2017★ 84 cited
The minimal-span channel for rough-wall turbulent flows
M. MacDonald, D. Chung, N. Hutchins +3
Roughness predominantly alters the near-wall region of turbulent flow while the outer layer remains similar. This makes it a prime candidate for the minimal-span channel, which onl…
physics.flu-dyn2015★ 108 cited
A fast direct numerical simulation method for characterising hydraulic roughness
Daniel Chung, Leon Chan, Michael MacDonald +2
We describe a fast direct numerical simulation (DNS) method that promises to directly characterise the hydraulic roughness of any given rough surface, from the hydraulically smooth…