Robust flow control and optimal sensor placement using deep reinforcement learning
This paper focuses on finding a closed-loop strategy to reduce the drag of a cylinder in
laminar flow conditions. Deep reinforcement learning algorithms have been implemented to …
laminar flow conditions. Deep reinforcement learning algorithms have been implemented to …
Transition scenario in hypersonic axisymmetrical compression ramp flow
A high-fidelity simulation of the shock/transitional boundary layer interaction caused by a
axisymmetrical compression ramp is performed at a free stream Mach number of 5 and a …
axisymmetrical compression ramp is performed at a free stream Mach number of 5 and a …
Transonic buffet instability: from two-dimensional airfoils to three-dimensional swept wings
The objective of the present study is to explain the evolution of the transonic buffet
phenomenon from two-dimensional airfoils to three-dimensional swept wings by a global …
phenomenon from two-dimensional airfoils to three-dimensional swept wings by a global …
Link between subsonic stall and transonic buffet on swept and unswept wings: from global stability analysis to nonlinear dynamics
This paper examines the three-dimensional cellular patterns appearing on wings in
subsonic stall and transonic buffet conditions. Unsteady Reynolds-averaged Navier–Stokes …
subsonic stall and transonic buffet conditions. Unsteady Reynolds-averaged Navier–Stokes …
Bifurcation scenario for a two-dimensional static airfoil exhibiting trailing edge stall
We numerically investigate stalling flow around a static airfoil at high Reynolds numbers
using the Reynolds-averaged Navier–Stokes equations (RANS) closed with the Spalart …
using the Reynolds-averaged Navier–Stokes equations (RANS) closed with the Spalart …
Reactive control of second Mack mode in a supersonic boundary layer with free-stream velocity/density variations
Reactive control of second Mack mode in a supersonic boundary layer with free-stream
velocity/density variations Page 1 J. Fluid Mech. (2023), vol. 954, A20, doi:10.1017/jfm.2022.997 …
velocity/density variations Page 1 J. Fluid Mech. (2023), vol. 954, A20, doi:10.1017/jfm.2022.997 …
Analysis of shock oscillations of an external compression supersonic inlet through unsteady numerical simulations
P Grenson, S Beneddine - 2018 Applied Aerodynamics Conference, 2018 - arc.aiaa.org
T role of supersonic air inlets is to decelerate the incoming supersonic air to a low subsonic
flow. This operation must induce the minimum possible total pressure losses while ensuring …
flow. This operation must induce the minimum possible total pressure losses while ensuring …
Effect of streaks on hypersonic boundary layer instability
Hypersonic boundary layers exhibit diverse transition pathways, influenced by various flow
conditions and environments. Non-modal mechanisms, such as the lift-up effect, are …
conditions and environments. Non-modal mechanisms, such as the lift-up effect, are …
[PDF][PDF] Fourier-averaged-Navier–Stokes analysis of periodic wakes: a new technique
BRS Freeman, A Hemmati, RJ Martinuzzi - Proc. of TSFP12, 2022 - tsfp-conference.org
Periodic and quasi-periodic fluid motion is observed in engineering and flow applications,
which involve a range of time and length scales. These coherent and regularly recurring …
which involve a range of time and length scales. These coherent and regularly recurring …
Study of a high Reynolds number flow around a two dimensional airfoil at stall; an approach coupling a RANS framework and bifurcation theory
D Busquet - 2020 - hal.science
Airfoil stall is commonly described as a sudden drop of lift when increasing the angle of
attack, which is detrimental to aircraft and helicopters. Past experimental and numerical …
attack, which is detrimental to aircraft and helicopters. Past experimental and numerical …