Instability and transition onset downstream of a laminar separation bubble at Mach 6

EK Benitez, MP Borg, A Scholten, P Paredes… - Journal of Fluid …, 2023 - cambridge.org
Instability measurements of an axisymmetric, laminar separation bubble were made over a
sharp cone-cylinder-flare with a flare angle under hypersonic quiet flow. Two distinct …

Measurements of an axisymmetric hypersonic shear-layer instability on a cone-cylinder-flare in quiet flow

EK Benitez, MP Borg, P Paredes, SP Schneider… - Physical Review …, 2023 - APS
Instabilities generated in Mach-6 quiet flow about an axisymmetric cone-cylinder-flare
geometry with a 5∘ half-angle sharp cone were studied in the Boeing/AFOSR Mach-6 Quiet …

Instability evolution in the hypersonic boundary layer over a wavy wall

WK Zhu, DW Gu, WF Si, MJ Zhang, SY Chen… - Journal of Fluid …, 2022 - cambridge.org
The effects of a wavy wall on the stability of a hypersonic boundary layer on a flared cone
are investigated by detailed experimental measurements and direct numerical simulations …

Oblique transition in hypersonic double-wedge flow

A Dwivedi, GS Sidharth, MR Jovanović - Journal of Fluid Mechanics, 2022 - cambridge.org
We utilize resolvent and weakly nonlinear analyses in combination with direct numerical
simulations (DNS) to identify mechanisms for oblique transition in a Mach hypersonic flow …

Transitional shockwave/boundary layer interaction experiments in the R2Ch blowdown wind tunnel

M Lugrin, F Nicolas, N Severac, JP Tobeli… - Experiments in …, 2022 - Springer
Transitional shockwave/boundary layer interactions (SBLI) are studied experimentally.
Experiments are conducted on a hollow-cylinder flare model in the R2Ch blowdown facility …

Response of hypersonic compression corner flow to upstream disturbances

J Hao, S Cao, P Guo, CY Wen - Journal of Fluid Mechanics, 2023 - cambridge.org
Hypersonic flow over a two-dimensional compression corner is investigated using
computational fluid dynamics and global resolvent analysis in this study, which is a …

Interaction of second-mode disturbances with an incipiently separated compression-corner flow

CS Butler, SJ Laurence - Journal of Fluid Mechanics, 2021 - cambridge.org
An experimental campaign was conducted to examine the impact of an abrupt change in
surface geometry on hypersonic boundary-layer instability waves. The primary test …

Focused laser differential interferometric investigation of turbulent jet spectra

A Hameed, NJ Parziale - Journal of Spacecraft and Rockets, 2022 - arc.aiaa.org
In this work, a model of focused laser differential interferometry (FLDI) is derived by
incorporating the local intensity of each beam in an FLDI beam pair. We rederive some …

Transitional hypersonic flow over slender cone/flare geometries

CS Butler, SJ Laurence - Journal of Fluid Mechanics, 2022 - search.proquest.com
Experiments are performed in a Mach-6 shock tunnel to examine the laminar-to-turbulent
transition process associated with a sudden increase in surface angle on a slender body. A …

Boundary-layer instabilities over a cone–cylinder–flare model at Mach 6

P Paredes, A Scholten, MM Choudhari, F Li… - AIAA Journal, 2022 - arc.aiaa.org
Computations are performed to investigate the convective and global boundary-layer
instabilities over a sharp cone–cylinder–flare model at zero-degree angle of attack. The …