Görtler instability and transition in compressible flows

D Xu, P Ricco, L Duan - AIAA Journal, 2024 - arc.aiaa.org
We present a discussion on theoretical, experimental, and computational research studies
on Görtler instability and the related transition to turbulence occurring in compressible …

[HTML][HTML] Decomposition of the skin-friction coefficient of compressible boundary layers

D Xu, P Ricco, L Duan - Physics of Fluids, 2023 - pubs.aip.org
We derive an integral formula for the skin-friction coefficient of compressible boundary layers
by extending the formula of Elnahhas and Johnson [“On the enhancement of boundary layer …

Görtler vortices and streaks in boundary layer subject to pressure gradient: excitation by free stream vortical disturbances, nonlinear evolution and secondary …

D Xu, J Liu, X Wu - Journal of Fluid Mechanics, 2020 - cambridge.org
This paper investigates streaks and Görtler vortices in a boundary layer over a flat or
concave wall in a contracting or expanding stream, which provides a favourable or adverse …

Disturbance growth on a NACA0008 wing subjected to free stream turbulence

JMF Alarcón, P Morra, A Hanifi… - Journal of Fluid …, 2022 - cambridge.org
The stability of an incompressible boundary layer flow over a wing in the presence of free
stream turbulence (FST) has been investigated by means of direct numerical simulations …

Receptivity of compressible boundary layers over porous surfaces

P Ricco, L Fossà - Physical Review Fluids, 2023 - APS
Supersonic pretransitional boundary layers flowing over porous flat and concave surfaces
are studied using numerical and asymptotic methods. The porous wall is composed of thin …

Influence of spanwise wall vibration on non-modal perturbations subject to freestream vortical disturbances in hypersonic boundary layers

Q Song, M Dong, L Zhao, X Chu, N Wu - Journal of Fluid Mechanics, 2024 - cambridge.org
In this paper, we study the effect of lateral wall vibrations on the excitation and evolution of
non-modal perturbations in hypersonic boundary layers subject to low-frequency freestream …

Influence of large-scale free-stream turbulence on bypass transition in air and organic vapour flows

A Bienner, X Gloerfelt, P Cinnella - Journal of Fluid Mechanics, 2024 - cambridge.org
The free-stream turbulence (FST) induced transition in perfect and non-ideal gas zero-
pressure-gradient flat-plate boundary layers is investigated by means of large-eddy …

Excitation and stability of nonlinear compressible Görtler vortices and streaks induced by free-stream vortical disturbances

D Xu, P Ricco, E Marensi - Journal of Fluid Mechanics, 2024 - cambridge.org
We study the generation, nonlinear development and secondary instability of unsteady
Görtler vortices and streaks in compressible boundary layers exposed to free-stream vortical …

Compressible unsteady Görtler vortices subject to free-stream vortical disturbances

S Viaro, P Ricco - Journal of Fluid Mechanics, 2019 - cambridge.org
The perturbations triggered by free-stream vortical disturbances in compressible boundary
layers develo** over concave walls are studied numerically and through asymptotic …

Nonlinear evolution of vortical disturbances entrained in the entrance region of a circular pipe

K Zhu, P Ricco - Journal of Fluid Mechanics, 2024 - cambridge.org
The nonlinear evolution of free-stream vortical disturbances entrained in the entrance region
of a circular pipe is investigated using asymptotic and numerical methods. Attention is …