Resumen
This work investigates a hypersonic turbulent boundary layer over a 7°" role="presentation">7°7°
7
°
half angle cone at a wall-to-total temperature ratio of 0.1, M∞=7.4" role="presentation">??8=7.4M8=7.4
M
8
=
7.4
and Re∞m=4.2×106" role="presentation">????8??=4.2×106Re8m=4.2×106
R
e
8
m
=
4.2
×
10
6
m−1" role="presentation">-1-1
-
1
, in terms of density fluctuations and the convection velocity of density disturbances. Experimental shock tunnel data are collected using a multi-foci Focused Laser Differential Interferometer (FLDI) to probe the boundary layer at several heights. In addition, a high-fidelity, time-resolved Large-Eddy Simulation (LES) of the conical flowfield under the experimentally observed free stream conditions is conducted. The experimentally measured convection velocity of density disturbances is found to follow literature data of pressure disturbances. The spectral distributions evidence the presence of regions with well-defined power laws that are present in pressure spectra. A framework to combine numerical and experimental observations without requiring complex FLDI post-processing strategies is explored using a computational FLDI (cFLDI) on the numerical solution for direct comparisons. Frequency bounds of 160 kHz <f<1" role="presentation">