Direct numerical simulation of supersonic turbulent flows over rough surfaces
We perform direct numerical simulation of supersonic turbulent channel flow over cubical
roughness elements, spanning bulk Mach numbers, both in the transitional and fully rough …
roughness elements, spanning bulk Mach numbers, both in the transitional and fully rough …
Effects of roughness on a turbulent boundary layer in hypersonic flow
Particle image velocimetry experiments were performed to study the effects of surface
roughness on a hypersonic (M ≈ 7.3 M≈ 7.3), flat-plate turbulent boundary layer. Diamond …
roughness on a hypersonic (M ≈ 7.3 M≈ 7.3), flat-plate turbulent boundary layer. Diamond …
Simultaneous turbulent boundary layer velocity profile and scalar turbulence spectra with linear array-FLDI
K Davenport, M Gragston - AIAA Scitech 2022 Forum, 2022 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2022-1313. vid In this work, a
configuration of linear array-focused laser differential interferometry (LA-FLDI) is used to …
configuration of linear array-focused laser differential interferometry (LA-FLDI) is used to …
Supersonic underexpanded jet features extracted from modal analyses of high-speed optical diagnostics
An experimental study concerning an underexpanded, screeching, Mach 1.5 jet operating at
a stagnation-to-ambient pressure ratio of 4.4 is presented. Experimental data were acquired …
a stagnation-to-ambient pressure ratio of 4.4 is presented. Experimental data were acquired …
Upstream influence in shock wave/transitional boundary layer interactions at Mach 1.8
This work expands on previous efforts that observed high-intensity resonance in the
dynamic shock motion generated by shock wave/boundary layer interactions with Mach 1.8 …
dynamic shock motion generated by shock wave/boundary layer interactions with Mach 1.8 …
The effect of near wall disturbances on a compressible turbulent boundary layer
J Gaskins - 2021 - search.proquest.com
This study investigates the effects of near wall disturbances in the form of roughness on a
compressible turbulent boundary layer. The studies were carried out using numerical …
compressible turbulent boundary layer. The studies were carried out using numerical …
Characterizing surface roughness effects through direct skin friction measurements
D Simmons, RJ Meritt, NJ Molinaro - AIAA AVIATION 2022 Forum, 2022 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2022-3925. vid An experimental test
campaign is being conducted to better understand the effects that surface roughness has on …
campaign is being conducted to better understand the effects that surface roughness has on …
Separation region unsteadiness drivers in swept compression ramps
DS Allen, KR Langley, JD Schmisseur… - AIAA SCITECH 2023 …, 2023 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2023-2490. vid We investigate the
unsteadiness of a 2D and 3D shock-wave/boundary layer interaction (SBLI) and the effect …
unsteadiness of a 2D and 3D shock-wave/boundary layer interaction (SBLI) and the effect …
Characterizing streamwise development of surface roughness effects on a supersonic boundary layer
Two-component particle image velocimetry was employed to measure the influence of
surface roughness on a Mach 2 boundary layer. Three surface conditions were examined: a …
surface roughness on a Mach 2 boundary layer. Three surface conditions were examined: a …
Exploration of upstream influence and the role of shock generator geometry in shock wave/transitional boundary layer interactions at Mach 1.8 edge conditions
This work expands on previous efforts that have observed spectral peaks in the dynamic
shock motion generated by shock wave/boundary layer interactions with Mach 1.8 edge …
shock motion generated by shock wave/boundary layer interactions with Mach 1.8 edge …