TY - GEN
T1 - High Enthalpy Effects on Hypersonic Boundary-Layer Transition
T2 - AIAA SciTech Forum and Exposition, 2024
AU - Hameed, A.
AU - Chen, J. H.
AU - Parziale, N. J.
AU - Kuehl, J.
AU - Liang, T.
AU - Graziose, K.
AU - Brehm, Christoph
AU - Dungan, Sean David
AU - Brazier, Jean Philippe
AU - Paquin, L.
AU - Laurence, S. J.
N1 - Publisher Copyright:
© 2024 by Nick Parziale. Published by the American Institute of Aeronautics and Astronautics, Inc.
PY - 2024
Y1 - 2024
N2 - In this paper, a numerical and experimental comparison is presented of a slightly blunted, 5° half-angle cone at high-enthalpy flow conditions. Experimental studies were conducted at California Institute of Technology’s T5 free piston reflected shock tunnel. Numerical stability investigations were conducted with STABL, MAMOUT of ONERA, JoKHeR of the University of Delaware, and CHAMPS of the University of Maryland. The comparison focuses on second-mode instability physics at high-enthalpy. The NLDE based solver was most accurate at identifying the most amplified frequency, however, significant uncertainty was observed in both N factor maximum amplitude and most amplified frequency amongst the various stability solvers. A comparison of solver results between experiments performed with an isothermal wall and an actively-cooled wall shows various degrees of success in portraying sensitivity to wall temperature.
AB - In this paper, a numerical and experimental comparison is presented of a slightly blunted, 5° half-angle cone at high-enthalpy flow conditions. Experimental studies were conducted at California Institute of Technology’s T5 free piston reflected shock tunnel. Numerical stability investigations were conducted with STABL, MAMOUT of ONERA, JoKHeR of the University of Delaware, and CHAMPS of the University of Maryland. The comparison focuses on second-mode instability physics at high-enthalpy. The NLDE based solver was most accurate at identifying the most amplified frequency, however, significant uncertainty was observed in both N factor maximum amplitude and most amplified frequency amongst the various stability solvers. A comparison of solver results between experiments performed with an isothermal wall and an actively-cooled wall shows various degrees of success in portraying sensitivity to wall temperature.
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U2 - 10.2514/6.2024-0289
DO - 10.2514/6.2024-0289
M3 - Conference contribution
AN - SCOPUS:85192153422
SN - 9781624107115
T3 - AIAA SciTech Forum and Exposition, 2024
BT - AIAA SciTech Forum and Exposition, 2024
Y2 - 8 January 2024 through 12 January 2024
ER -