Effect of Reynolds Number on 3-D Shock Wave Boundary Layer Interactions

Dynamics of strong swept-shock/turbulent-boundary-layer interactions

“…The flow conditions of the current work are described in table 1, in which the simulation conditions are placed in context with those of the experiments for both the SCR (Vanstone et al 2016) and SF (Baldwin et al 2016;Arora et al 2018) configurations. The simulation Reynolds number (Re) is reduced for computational feasibility, while maintaining the free-stream Mach number (M ∞ ) and velocity (U ∞ ), the stagnation temperature (T 0 ) and the boundary-layer momentum (Θ) and outer-scale (u(δ) = 0.99U ∞ ) thicknesses, and reducing the free-stream pressure (P ∞ ).…”

“…have been validated in conjunction with experiments for both the SCR (Vanstone et al 2016(Vanstone et al , 2018 and SF (Baldwin et al 2016;Arora et al 2018) configurations. These include comparisons of surface flow visualization, surface pressure and all three velocity components in both Cartesian and spherical coordinates, which are discussed by Adler & Gaitonde (2017, 2018b, 2019a.…”

“…These thrusts have been prompted by several recent advances in massively parallel simulations (Poggie, Bisek & Gosse 2015) as well as time-resolved unsteady measurements of high-speed flows (Beresh et al 2015) and other novel measurement techniques (Fahringer & Thurow 2018). The effort combines experimental measurements of the SCR (Vanstone et al 2016(Vanstone et al , 2018 and SF (Baldwin et al 2016;Jones et al 2017;Arora et al 2018) interactions, along with high-fidelity large-eddy simulations (Adler & Gaitonde 2017, 2018b, 2019a of both configurations. The swept-impinging-shock (SIS) interaction is also of great interest, and is the subject of parallel experimental (Doehrmann et al 2018) and computational (Gross, Little & Fasel 2018) efforts, but is not considered here.…”

Flow Similarity in Strong Swept-Shock/Turbulent-Boundary-Layer Interactions

“…Several interesting trends with interaction strength are then assimilated in terms of dependence on the inceptive-origin/ virtual-conical-origin relationship. Validation results with the experiments of Vanstone et al [39,40] as well as Arora et al [37] and Baldwin et al [38] are purposefully deferred to Sec. III.E, to allow for discussion of the observations in the context of results elaborated in earlier sections.…”

“…Aspects of unsteadiness that relate to the mean flow are also discussed, though for brevity, detailed discussions of spectra are deferred to a forthcoming paper. The simulations are grounded in parallel experimental campaigns for both the SF [37,38] and SCR [39,40] interactions. However, the present LES are not inhibited by the limitations of near-wall measurement resolution or fidelity, as are current experimental or RANS-based techniques, respectively.…”