Direct numerical simulation of complete H-type and K-type transitions with implications for the dynamics of turbulent boundary layers

T Sayadi, CW Hamman, P Moin - Journal of Fluid Mechanics, 2013 - cambridge.org
The onset and development of turbulence from controlled disturbances in compressible (in
each transition scenario. Skin-friction maxima, organized hairpin vortices and the onset of …

Importance of the nozzle-exit boundary-layer state in subsonic turbulent jets

GA Brès, P Jordan, V Jaunet, M Le Rallic… - Journal of Fluid …, 2018 - cambridge.org
To investigate the effects of the nozzle-exit conditions on jet flow and sound fields, large-
eddy simulations of an isothermal Mach 0.9 jet issued from a convergent-straight nozzle are …

Unstructured large-eddy simulations of supersonic jets

GA Bres, FE Ham, JW Nichols, SK Lele - AIAA journal, 2017 - arc.aiaa.org
Experience gained from previous jet noise studies with the unstructured large-eddy
simulation flow solver “Charles” is summarized and put to practice for the predictions of …

An improved dynamic non-equilibrium wall-model for large eddy simulation

GI Park, P Moin - Physics of Fluids, 2014 - pubs.aip.org
A non-equilibrium wall-model based on unsteady 3D Reynolds-averaged Navier-Stokes
(RANS) equations has been implemented in an unstructured mesh environment. The …

Input-output analysis of high-speed axisymmetric isothermal jet noise

J Jeun, JW Nichols, MR Jovanović - Physics of Fluids, 2016 - pubs.aip.org
We use input-output analysis to predict and understand the aeroacoustics of highspeed
isothermal turbulent jets. We consider axisymmetric linear perturbations about Reynolds …

Transition to turbulence in hypersonic flow over a compression ramp due to intrinsic instability

S Cao, J Hao, I Klioutchnikov, CY Wen… - Journal of Fluid …, 2022 - cambridge.org
In this work, a transition process in a hypersonic flow over a cold-wall compression ramp is
studied using direct numerical simulation (DNS) and global stability analysis (GSA). The free …

Unsteady effects in a hypersonic compression ramp flow with laminar separation

S Cao, J Hao, I Klioutchnikov, H Olivier… - Journal of Fluid …, 2021 - cambridge.org
Direct numerical simulations (DNS) are performed to investigate a hypersonic flow over a
compression ramp with a free stream Mach number of 7.7 and a free stream Reynolds …

A database for reduced-complexity modeling of fluid flows

A Towne, STM Dawson, GA Brès, A Lozano-Durán… - AIAA journal, 2023 - arc.aiaa.org
We present a publicly accessible database specifically designed to aid in the conception,
training, demonstration, evaluation, and comparison of reduced-complexity models for fluid …

Stability and modal analysis of shock/boundary layer interactions

JW Nichols, J Larsson, M Bernardini… - … and Computational Fluid …, 2017 - Springer
The dynamics of oblique shock wave/turbulent boundary layer interactions is analyzed by
mining a large-eddy simulation (LES) database for various strengths of the incoming shock …

Amplification and regulation of periodic nanostructures in multipulse ultrashort laser-induced surface evolution by electromagnetic-hydrodynamic simulations

A Rudenko, C Mauclair, F Garrelie, R Stoian… - Physical Review B, 2019 - APS
The formation of periodic structures in ultrafast laser-irradiated surfaces implies dynamic
coupling between the incoming light and the light-driven material. To capture the mutual …