Upstream influence in shock wave/transitional boundary layer interactions at mach 1.8

E. Lara Lash, Mark Gragston, Phillip A. Kreth, Zachary McDaniel, James G. Coder, John D. Schmisseur

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


This work expands on previous efforts that observed high-intensity resonance in the dynamic shock motion generated by shock wave/boundary layer interactions with Mach 1.8 edge conditions when the inflow boundary layer is in transition. Specifically, this effort characterizes the behavior of a thickening of the boundary layer upstream of the separation shock location that appears to strongly correlate with the motion of the upstream influence shock; this work also verifies that the focused spectra observed in measurements with a cylinder on a flat plate are also observed in interactions generated by a blunt fin or on a cone with similar boundary layer edge conditions. The dynamic motion of the shock waves in the transitional interactions are characterized using high-speed schlieren and statistical information derived by tracking the location of various features of the interaction within the frame sequence.

Original languageEnglish (US)
Pages (from-to)4842-4857
Number of pages16
JournalAIAA journal
Issue number12
StatePublished - Dec 2021

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering


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