Experimental evidence of amplitude modulation in permeable-wall turbulence

T Kim, G Blois, JL Best, KT Christensen - Journal of Fluid Mechanics, 2020 - cambridge.org
The dynamic interplay between surface and subsurface flow in the presence of a permeable
boundary was investigated using low and high frame-rate particle-image velocimetry …

Dispersive fluxes within and over a real urban canopy: a large-eddy simulation study

E Akinlabi, B Maronga, MG Giometto, D Li - Boundary-Layer Meteorology, 2022 - Springer
Large-eddy simulations (LES) are conducted to study the transport of momentum and
passive scalar within and over a real urban canopy in the City of Boston, USA. This urban …

Impact of urban canopy characteristics on turbulence dynamics: Insights from large eddy simulation

G Tian, Y Ma, Y Chen, M Wan, S Chen - Building and Environment, 2024 - Elsevier
In this study, a series of large-eddy simulations are conducted to explore the dynamics of
turbulence within the urban canopy. Two idealized urban-like geometries (staggered and …

Turbulent kinetic energy budget in the boundary layer developing over an urban-like rough wall using PIV

K Blackman, L Perret, I Calmet, C Rivet - Physics of Fluids, 2017 - pubs.aip.org
In the present work, a boundary layer developing over a rough-wall consisting of staggered
cubes with a plan area packing density λ p= 25% is studied within the wind tunnel using …

Inner–outer interactions in a turbulent boundary layer overlying complex roughness

G Pathikonda, KT Christensen - Physical Review Fluids, 2017 - APS
Hot-wire measurements were performed in a zero-pressure-gradient turbulent boundary
layer overlying both a smooth and a rough wall for the purpose of investigating the details of …

Study on interaction between the wind-turbine wake and the urban district model by large eddy simulation

M Ge, S Zhang, H Meng, H Ma - Renewable Energy, 2020 - Elsevier
Urban wind power shows a great potential and plays a significant role for a sustainable city.
As a fundamental issue, the interaction between the wind-turbine wake and a building array …

Spatial modulations of kinetic energy in the roughness sublayer

J Basley, L Perret, R Mathis - Journal of Fluid Mechanics, 2018 - cambridge.org
High-Reynolds-number experiments are conducted in the roughness sublayer of a turbulent
boundary layer developing over a cubical canopy. Stereoscopic particle image velocimetry …

Turbulent boundary layer flow over a three-dimensional sinusoidal surface

CI Chan, RC Chin - Journal of Fluid Mechanics, 2023 - cambridge.org
The sinusoidal roughness effect is investigated using a direct numerical simulation (DNS) of
a spatially developing turbulent boundary layer (TBL) over three-dimensional sinusoidal …

Turbulence-kinetic-energy budget in the urban-like boundary layer using large-eddy simulation

G Tian, B Conan, I Calmet - Boundary-Layer Meteorology, 2021 - Springer
We describe and explain the turbulent processes at play in the lower part of the urban
boundary layer through performing a large-eddy simulation of the flow over an urban-like …

Flow around in-line sphere array at moderate Reynolds number

D Choi, H Park - Physics of Fluids, 2018 - pubs.aip.org
In the present study, we perform a series of water-tunnel experiments to investigate the flow
around an in-line sphere array at the Reynolds number of 1000, based on the free-stream …