Turbulent superstructures in Rayleigh-Bénard convection

A Pandey, JD Scheel, J Schumacher - Nature communications, 2018 - nature.com
Turbulent Rayleigh-Bénard convection displays a large-scale order in the form of rolls and
cells on lengths larger than the layer height once the fluctuations of temperature and velocity …

Wall shear stress fixed points in cardiovascular fluid mechanics

A Arzani, SC Shadden - Journal of biomechanics, 2018 - Elsevier
Complex blood flow in large arteries creates rich wall shear stress (WSS) vectorial features.
WSS acts as a link between blood flow dynamics and the biology of various cardiovascular …

Near-wall flow structures and related surface quantities in wall-bounded turbulence

T Chen, T Liu, ZQ Dong, LP Wang, S Chen - Physics of Fluids, 2021 - pubs.aip.org
By applying the Taylor-series expansion solution of the Navier–Stokes equations, an
analysis is given to elucidate the relationships between near-wall flow structures and the …

Is chaotic advection inherent to porous media flow?

DR Lester, G Metcalfe, MG Trefry - Physical review letters, 2013 - APS
We show that chaotic advection is inherent to flow through all types of porous media, from
granular and packed media to fractured and open networks. The basic topological …

Chaotic mixing in three-dimensional porous media

DR Lester, M Dentz, T Le Borgne - Journal of Fluid Mechanics, 2016 - cambridge.org
Under steady flow conditions, the topological complexity inherent to all random three-
dimensional (3D) porous media imparts complicated flow and transport dynamics. It has …

On a mechanism of near-wall reverse flow formation in a turbulent duct flow

D Zaripov, V Ivashchenko, R Mullyadzhanov… - Journal of Fluid …, 2021 - cambridge.org
We address the issue of the generation mechanism of near-wall reverse flow (NWRF) events
in a fully developed turbulent duct flow using direct numerical simulations and particle image …

Local boundary layer scales in turbulent Rayleigh–Bénard convection

JD Scheel, J Schumacher - Journal of fluid mechanics, 2014 - cambridge.org
We compute fully local boundary layer scales in three-dimensional turbulent Rayleigh–
Bénard convection. These scales are directly connected to the highly intermittent fluctuations …

Skin-friction topology of wing–body junction flows

H Zhong, S Woodiga, P Wang, J Shang, X Cui… - European Journal of …, 2015 - Elsevier
High-resolution time-averaged skin-friction fields in wing–body junction flows are extracted
from luminescent oil-film visualization images taken at different viewing angles and positions …

Transitional boundary layers in low-Prandtl-number convection

J Schumacher, V Bandaru, A Pandey, JD Scheel - Physical Review Fluids, 2016 - APS
The boundary layer structure of the velocity and temperature fields in turbulent Rayleigh-
Bénard flows in closed cylindrical cells of unit aspect ratio is revisited from a transitional and …

Exact relations between Laplacian of near-wall scalar fields and surface quantities in incompressible viscous flow

T Chen, T Liu - European Journal of Mechanics-B/Fluids, 2023 - Elsevier
In this short paper, we derive the on-wall values and the wall-normal derivatives of the
Laplacians of pressure and kinetic energy density at the wall for incompressible viscous flow …