Focused Laser Differential Interferometry: Recent Developments and Applications for Flow Measurements

EK Benitez, A Ceruzzi, M Gragston… - AIAA SCITECH 2025 …, 2025 - arc.aiaa.org
Focused laser differential interferometry (FLDI), first introduced in the 1970s, has developed
into a powerful tool for the analysis of turbulent dynamics and fluctuations in fluid flows …

Megahertz-rate imaging of hypersonic boundary-layer instabilities in a mach 10 shock tunnel

N Jiang, PS Hsu, M Slipchenko, S Roy, DK Lauriola… - AIAA Journal, 2023 - arc.aiaa.org
The transition of the boundary-layer state from laminar to turbulent on a 7° sharp cone in
Mach 10 flow is measured using several high-speed optical diagnostics capable of time …

Measurements of the evolution of scalar disturbance spectra and heat transfer rates on a flared cone at Mach 6

F Siddiqui, MT Gragston, J Shine… - AIAA SCITECH 2023 …, 2023 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2023-1988. vid A 91-6 flared cone model
has been tested in a blowdown Mach 6 wind tunnel. The FLDI optical diagnostic was used to …

Wall-Cooling Effect on Boundary-Layer Instability Growth and Transition in the AFRL Mach-6 Ludwieg Tube

JT Clingenpeel, EK Benitez, JL Hill, MW Tufts… - AIAA Aviation 2023 …, 2023 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2023-3701. vid High-speed schlieren
was used to determine the boundary-layer transition location on a highly cooled 7° sharp …