Microvortex generators in high-speed flow

FK Lu, Q Li, C Liu - Progress in Aerospace Sciences, 2012 - Elsevier
A review of the state-of-the-knowledge of microvortex generators (MVGs) and their effect on
separated shock/boundary-layer interactions is provided. The flowfield around and behind …

Drag and lift reduction of a 3D bluff-body using active vortex generators

JL Aider, JF Beaudoin, JE Wesfreid - Experiments in fluids, 2010 - Springer
In this study, a passive flow control experiment on a 3D bluff-body using vortex generators
(VGs) is presented. The bluff-body is a modified Ahmed body (Ahmed in J Fluids Eng 105 …

Experimental measurements in plane Couette–Poiseuille flow: dynamics of the large-and small-scale flow

L Klotz, AM Pavlenko, JE Wesfreid - Journal of Fluid Mechanics, 2021 - cambridge.org
In this paper we experimentally study the transitional range of Reynolds numbers in plane
Couette–Poiseuille flow, focusing our attention on the localized turbulent structures triggered …

Couette-Poiseuille flow experiment with zero mean advection velocity: Subcritical transition to turbulence

L Klotz, G Lemoult, I Frontczak, LS Tuckerman… - Physical Review …, 2017 - APS
We present an experimental setup that creates a shear flow with zero mean advection
velocity achieved by counterbalancing the nonzero streamwise pressure gradient by moving …

Self-sustained localized structures in a boundary-layer flow

Y Duguet, P Schlatter, DS Henningson, B Eckhardt - Physical review letters, 2012 - APS
When a boundary layer starts to develop spatially over a flat plate, only disturbances of
sufficiently large amplitude survive and trigger turbulence subcritically. Direct numerical …

A rapid and low noise switch from RANS to WMLES on curvilinear grids with compressible flow solvers

S Deck, PE Weiss, N Renard - Journal of Computational Physics, 2018 - Elsevier
A turbulent inflow for a rapid and low noise switch from RANS to Wall-Modelled LES on
curvilinear grids with compressible flow solvers is presented. It can be embedded within the …

Experimental scaling law for the subcritical transition to turbulence in plane Poiseuille flow

G Lemoult, JL Aider, JE Wesfreid - … Review E—Statistical, Nonlinear, and Soft …, 2012 - APS
We present an experimental study of the transition to turbulence in a plane Poiseuille flow.
Using a well-controlled perturbation, we analyze the flow by using extensive particle image …

Turbulent spots in a channel: large-scale flow and self-sustainability

G Lemoult, JL Aider, JE Wesfreid - Journal of Fluid Mechanics, 2013 - cambridge.org
Using a large-time-resolved particle image velocimetry field of view, a developing turbulent
spot is followed in space and time in a rectangular channel flow for more than 100 advective …

Experiments on transient growth of turbulent spots

L Klotz, JE Wesfreid - Journal of Fluid Mechanics, 2017 - cambridge.org
We present detailed experiments on transient growth of turbulent spots induced by external
forcing in plane Couette–Poiseuille flow, which are studied in the framework of linear …

Lift-up and streak waviness drive the self-sustained process in wall-bounded transition to turbulence

T Liu, B Semin, R Godoy-Diana, JE Wesfreid - Physical Review Fluids, 2024 - APS
Flow field measurements from a Couette-Poiseuille experiment are used to examine
quantitatively certain steps of the self-sustained process (SSP) of wall-bounded transition to …