Observations on the Turbulent Structure in an Unsteady, Normal Shock/Boundary-Layer Interaction

摘要

The turbulence structure in an interaction between an oscillating normal shock and a thick turbulent boundary layer was studied using optical methods. The results from the optical studies, together with mean and fluctuating surface pressures are used to illuminate the effects of unsteadiness on the interaction. Failure of the main tunnel window interrupted the tests, but the Schlieren and shadowgraph photography, holographic interferometry, and dynamic Schlieren methods are shown to be valuable.