Journal
PHYSICAL REVIEW FLUIDS
Volume 5, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevFluids.5.014602
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Funding
- Air Force Office of Scientific Research [FA9550-16-1-0385]
- Scientific Independence of young Researchers program 2014 (Active Control of Shock-wave Boundary-layer Interaction project) - MIUR [RBSI14TKWU]
- DOE Office of Science User Facility [DE-AC02-06CH11357]
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High-fidelity numerical simulations of an impinging shock interacting with a turbulent boundary layer at free-stream Mach number Ma(infinity) = 5.0 are performed for three shock angles and a weakly cooled wall condition (wall-to-recovery temperature ratio of T-w/T-r = 0.8), matching the experimental conditions of Schtilein [AIAA J. 44, 1732 (2006)]. Additional simulations are carried out with a heated wall (T-w/T-r = 1.9) to investigate the impact of the wall thermal condition on shock/boundary-layer interactions in the hypersonic regime. The free interaction theory is found to remain valid in the hypersonic regime even at different wall thermal conditions. The interaction length scaling proposed by Jaunet et al. [AIAA J. 52, 2524 (2014)] previously validated only at supersonic Mach numbers, is found to remain viable at higher Mach numbers only if the model coefficient is adjusted, thus showing that this coefficient is not universal.
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