Large-to-small scale frequency modulation analysis in wall-bounded turbulence via visibility networks

G Iacobello, L Ridolfi, S Scarsoglio - Journal of Fluid Mechanics, 2021 - cambridge.org
Scale interaction is studied in wall-bounded turbulence by focusing on the frequency
modulation (FM) mechanism of the large scales on small-scale velocity fluctuations. Different …

Large-scale coherent structure and canopy-level turbulence in the convective boundary layer over urban areas

K Zhou, CH Liu, M Wan - Building and Environment, 2023 - Elsevier
Thermally unstable stratification alters the winds over urban areas and excites organized,
large-scale motions (LSMs) in the atmospheric boundary layer (ABL). The current …

[HTML][HTML] Effective use of the streamwise waviness in the control of turbulent separation

A Dróżdż, P Niegodajew, M Romańczyk… - … Thermal and Fluid …, 2021 - Elsevier
It is commonly known that for a sufficiently high Reynolds number, for flow over a rough
surface and other previously examined wall topologies, turbulent boundary layer separation …

The atmospheric boundary layer over urban-like terrain: influence of the plan density on roughness sublayer dynamics

L Perret, J Basley, R Mathis, T Piquet - Boundary-Layer Meteorology, 2019 - Springer
We investigate the effect of the packing density of cubical roughness elements on the
characteristics of both the roughness sublayer and the overlying turbulent boundary layer, in …

Stability influences on interscale transport of turbulent kinetic energy and Reynolds shear stress in atmospheric boundary layers interacting with a tall vegetation …

L Perret, EG Patton - Journal of Fluid Mechanics, 2021 - cambridge.org
High-resolution data from the large-eddy simulation of the atmospheric boundary layer
(ABL) over a vegetation canopy are used to investigate the interaction between the most …

Large-eddy simulation of the urban boundary layer using drag-porosity modeling

Q Bucquet, I Calmet, L Perret, M Maché - Journal of Wind Engineering and …, 2023 - Elsevier
This work details the assessment of the performance of the drag-porosity model
implemented in ARPS (Advanced Regional Prediction System) atmospheric Large-Eddy …

Structure of high Reynolds number boundary layers over cube canopies

J Basley, L Perret, R Mathis - Journal of Fluid Mechanics, 2019 - cambridge.org
The influence of a cube-based canopy on coherent structures of the flow was investigated in
a high Reynolds number boundary layer (thickness) combined to two-point hot-wire …

Amplitude modulation of turbulence intensities and fluxes in urban convective boundary layers

K Zhou, CH Liu, D Mei, B Wu, M Wan - … Journal of Heat and Mass Transfer, 2024 - Elsevier
Despite extensive research on the effect of atmospheric stability, the influence of convective
rolls and thermal plumes in convective boundary layer (CBL) on urban winds and turbulence …

Identification of very large scale structures in the boundary layer over large roughness elements

L Perret, F Kerhervé - Experiments in Fluids, 2019 - Springer
The dynamics of a turbulent boundary layer developing over a cube array is investigated
based on stereoscopic PIV measurements performed in a boundary layer wind tunnel. The …

Assessment of inner–outer interactions in the urban boundary layer using a predictive model

K Blackman, L Perret, R Mathis - Journal of Fluid Mechanics, 2019 - cambridge.org
Urban-type rough-wall boundary layers developing over staggered cube arrays with plan
area packing density, is the height of the roughness elements. The synchronized two-point …