Velocimetry Measurements in a Mach 6 Ludwieg Tube
Document Type
Conference Proceeding
Publication Date
1-3-2022
Abstract
Velocity measurements were conducted at 1 kHz in air and nitrogen flows in a Mach 6 Ludwieg tube under ~600 Pa static pressure conditions using femtosecond laser electronic excitation tagging (FLEET). The signal from air and nitrogen were compared in freestream conditions and with a blunt cone model (7-degree half-angle). The long-laser time series operation relative to the facility operation time allowed the characterization of the mean velocity over the entire facility operation. In addition, FLEET velocimetry was demonstrated in the boundary layer of an ogive-cylinder model in a Mach-6 Ludwieg tube. One-dimensional velocity profiles were extracted from the FLEET signal in laminar boundary layers from pure N2 flows. The effects of model tip bluntness and the unit Reynolds number on the velocity profiles were investigated.
Source Publication
AIAA SCITECH 2022 Forum
Recommended Citation
Grib, S. W., Jiang, N., Hsu, P., Hill, J. L., Levi, T., Reeder, M. F., Borg, M. P., Roy, S., & Schumaker, S. A. (2022). Velocimetry Measurements in a Mach 6 Ludwieg Tube. AIAA SCITECH 2022 Forum, AIAA #2022-0901. https://doi.org/10.2514/6.2022-0901
Comments
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Conference Session: Velocimetry Techniques such as PIV, MTV, DGV, and FLEET I