Transition and turbulence production in a hypersonic boundary layer is investigated in a Mach 6 wind tunnel using Rayleigh-scattering visualization, fast-response pressure measurements, and particle image velocimetry. It is found that the second-mode instability is a key modulator of the transition process. Although the second-mode is primarily an acoustic wave, it causes the formation of high-frequency vortical waves, which triggers a fast transition to turbulence.
No takes yet. Share an insight, caveat, or question.
Zhang et al. (2015) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: