TY - GEN
T1 - Transitional Fin-Induced Shock Boundary Layer Interactions on a Hollow Cylinder at Mach 5
AU - Plummer, Addison E.
AU - Padmanabhan, Sathyan
AU - Singh, Ashish
AU - Threadgill, James A.S.
AU - Little, Jesse C.
N1 - Publisher Copyright:
© 2023, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2023
Y1 - 2023
N2 - Fin-induced Shock Boundary Layer Interactions (SBLIs) are investigated on a hollow cylinder at Mach 5 across a range of Reynolds numbers 1.27 × 106 < Rexf < 4.90 × 106. Unsteady pressure measurements demonstrate that the incoming boundary layer contains transitional features for all cases. Infrared thermography (IRT) is used to measure surface heat transfer characterizing the global structure of the SBLI. IRT results show transitional behavior within SBLI, with a downstream shift in separation location and the development of secondary separation for the highest Reynolds number case (Rexf = 4.90 × 106). An elevated region of surface heat transfer is observed near reattachment for all cases but is segmented at low Reynolds numbers. RMS pressure levels and spectra within the SBLI increase with an increase in Reynolds number. The highest Reynolds number case (Rexf = 4.90 × 106) demonstrates low frequency unsteadiness near reattachment and significantly greater unsteadiness throughout the SBLI.
AB - Fin-induced Shock Boundary Layer Interactions (SBLIs) are investigated on a hollow cylinder at Mach 5 across a range of Reynolds numbers 1.27 × 106 < Rexf < 4.90 × 106. Unsteady pressure measurements demonstrate that the incoming boundary layer contains transitional features for all cases. Infrared thermography (IRT) is used to measure surface heat transfer characterizing the global structure of the SBLI. IRT results show transitional behavior within SBLI, with a downstream shift in separation location and the development of secondary separation for the highest Reynolds number case (Rexf = 4.90 × 106). An elevated region of surface heat transfer is observed near reattachment for all cases but is segmented at low Reynolds numbers. RMS pressure levels and spectra within the SBLI increase with an increase in Reynolds number. The highest Reynolds number case (Rexf = 4.90 × 106) demonstrates low frequency unsteadiness near reattachment and significantly greater unsteadiness throughout the SBLI.
UR - http://www.scopus.com/inward/record.url?scp=85196220895&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85196220895&partnerID=8YFLogxK
U2 - 10.2514/6.2023-3700
DO - 10.2514/6.2023-3700
M3 - Conference contribution
AN - SCOPUS:85196220895
SN - 9781624107047
T3 - AIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
BT - AIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - AIAA Aviation and Aeronautics Forum and Exposition, AIAA AVIATION Forum 2023
Y2 - 12 June 2023 through 16 June 2023
ER -