Mean flow and turbulence in unsteady canopy layers
W Li, MG Giometto - Journal of Fluid Mechanics, 2023 - cambridge.org
Non-stationarity is the rule in the atmospheric boundary layer (ABL). Under such conditions,
the flow may experience departures from equilibrium with the underlying surface stress …
the flow may experience departures from equilibrium with the underlying surface stress …
Turbulence measurements: An assessment of Acoustic Doppler Current Profiler accuracy in rough environment
The deployment of tidal turbines requires a precise hydrodynamic characterisation of the
production site. Acoustic Doppler Current Profilers (ADCP), usually employed for measuring …
production site. Acoustic Doppler Current Profilers (ADCP), usually employed for measuring …
Asymmetric secondary flows above geometrically symmetric surface roughness
The mean flow behaviour of a turbulent boundary layer over rough walls is expected to
exhibit symmetries that govern the flow dynamics. In particular, when roughness elements …
exhibit symmetries that govern the flow dynamics. In particular, when roughness elements …
Large-eddy simulation of the urban boundary layer using drag-porosity modeling
This work details the assessment of the performance of the drag-porosity model
implemented in ARPS (Advanced Regional Prediction System) atmospheric Large-Eddy …
implemented in ARPS (Advanced Regional Prediction System) atmospheric Large-Eddy …
Study of interscale interactions for turbulence over the obstacle arrays from a machine learning perspective
W Liu, Y Zou, X Li - Physics of Fluids, 2023 - pubs.aip.org
Investigating interactions between large-and small-scale motions is essential for
understanding turbulence over rough boundaries. The present work applies XGBoost …
understanding turbulence over rough boundaries. The present work applies XGBoost …
Effects of the roughness height in turbulent boundary layers over rod-and cuboid-roughened walls
Direct numerical simulations (DNSs) of spatially developing turbulent boundary layers
(TBLs) over two-dimensional (2D) rod-roughened walls and three-dimensional (3D) cuboid …
(TBLs) over two-dimensional (2D) rod-roughened walls and three-dimensional (3D) cuboid …
Assessment of inner–outer interactions in the urban boundary layer using a predictive model
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 …
area packing density, is the height of the roughness elements. The synchronized two-point …
The structure of turbulence in unsteady flow over urban canopies
W Li, MG Giometto - Journal of Fluid Mechanics, 2024 - cambridge.org
The topology of turbulent coherent structures is known to regulate the transport of energy,
mass and momentum in the atmospheric boundary layer (ABL). While previous research has …
mass and momentum in the atmospheric boundary layer (ABL). While previous research has …
The influence of roughness-element-spacing on turbulent entrainment over spanwise heterogeneous roughness
Spanwise heterogeneous surfaces have been found to modulate local turbulent entrainment
by inducing large-scale secondary flows (SFs). This work aims to clarify the variations of the …
by inducing large-scale secondary flows (SFs). This work aims to clarify the variations of the …
Direct Numerical Simulation of Turbulent Boundary Layer over Cubical Roughness Elements
M Yoon - Applied Sciences, 2024 - mdpi.com
The present study explores turbulence statistics in turbulent flow over urban-like terrain
using direct numerical simulation (DNS). DNS is performed in a turbulent boundary layer …
using direct numerical simulation (DNS). DNS is performed in a turbulent boundary layer …