Mechanism for frustum transition over blunt cones at hypersonic speeds

P Paredes, MM Choudhari, F Li - Journal of Fluid Mechanics, 2020 - cambridge.org
Numerical and experimental studies have demonstrated laminar–turbulent transition in
hypersonic boundary layers over sharp cones via the modal growth of planar Mack-mode …

Nonmodal growth of traveling waves on blunt cones at hypersonic speeds

P Paredes, MM Choudhari, F Li, JS Jewell, RL Kimmel - AIAA Journal, 2019 - arc.aiaa.org
The existing database of transition measurements in hypersonic ground facilities has
established that, as the nose-tip bluntness is increased, the onset of boundary-layer …

Hypersonic shock-wave/boundary-layer interactions on a cone/flare

CL Running, TJ Juliano, JS Jewell, MP Borg… - … Thermal and Fluid …, 2019 - Elsevier
Time-resolved surface temperature measurements have been carried out on a 7° half-angle
circular cone/flare model in the Air Force Research Laboratory's Mach-6 Ludwieg Tube …

Receptivity of a hypersonic blunt cone: Role of disturbances in entropy layer

B Wan, C Su, J Chen - AIAA Journal, 2020 - arc.aiaa.org
The boundary-layer receptivity of the second mode to a slow acoustic wave is investigated
using direct numerical simulation for a Mach 6 flow over a blunt cone with the nose radius of …

Phenomenological introduction of standoff distance of sonic ring impelling entropy waves and aerodynamic heating of hypersonic vehicles

VR Sanal Kumar, D Vinay, R Sharma… - 25th AIAA International …, 2023 - arc.aiaa.org
The fundamental understanding of the Sanal flow choking and/or sonic fluid throat effect
(VRS Kumar et al., Physics of Fluids, 34 (4 & 10), 2022) in real-world fluid flow system sheds …

Interaction of a tunnel-like acoustic disturbance field with a blunt cone boundary layer at Mach 8

Y Liu, M Schuabb, L Duan, P Paredes… - AIAA Aviation 2022 …, 2022 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2022-3250. vid The existing
measurements of laminar-to-turbulent transition over circular cones in conventional (ie," …

Heated wind-tunnel experiments and numerical investigations onhypersonic blunt cone aerodynamic heating

Z Zhang, W Xu, W Ye, Z Li, Z Liu - Acta Astronautica, 2022 - Elsevier
Aero-thermal analysis of hypersonic vehicles is of fundamental interest for structural design
and material selection. Therefore, we investigated the aerodynamic heating characteristics …

Effects of nose bluntness on entropy-layer stabilities over cones and wedges

B Wan, J Chen, G Tu, X Xiang, X Yuan, M Duan - Acta Mechanica Sinica, 2023 - Springer
The effects of nose bluntness on the entropy-layer stabilities in hypersonic flows over blunt
cones and wedges are investigated by using linear stability theory and numerical simulation …

Ionization and dissociation effects on boundary-layer stability

FM Miró, ES Beyak, F Pinna, HL Reed - Journal of Fluid Mechanics, 2021 - cambridge.org
The ever-increasing need for optimized atmospheric-entry and hypersonic-cruise vehicles
requires an understanding of the coexisting high-enthalpy phenomena. These phenomena …

Laminar-turbulent transition upstream of the entropy-layer swallowing location in hypersonic boundary layers

P Paredes, MM Choudhari, F Li - AIAA Aviation 2019 Forum, 2019 - arc.aiaa.org
T= temperature [K] Tw= wall temperature [K] Tw, ad= adiabatic wall temperature [K](u, v, w)=
streamwise, wall-normal, and azimuthal velocity components [m· s− 1](x, y, z)= Cartesian …