Experimental/Computational Investigation of Shock-Wave/Boundary-Layer Interaction on an Axisymmetric Cone
Redha Wahidi, Hardeo M. Chin, Simon He, Michael C. Adler, Rajan Kumar
Abstract
The flow physics of shock-wave/boundary-layer interactions (SBLIs) on an axisymmetric cone are explored. This joint experimental and numerical study focuses on the SBLIs on an axisymmetric cone in comparison to 2D and 3D canonical configurations with flat surfaces. The experiments and numerical simulations were carried out at Mach numbers 2 and 4. The effects of shock strength and impingement location on the cone were examined. The planar shock waves were generated using wedge-shaped shock generators with different turn angles to vary the impinging shock angle. The experiments involve unsteady pressure measurements using fast-response pressure sensors and, pressure-sensitive paint (PSP), surface oil flow, and shadowgraph flow visualizations. These measurements are used to understand flow physics and determine separation location, the extent of the separation region, and the upstream influence. The unsteady pressure measurements are used to examine the pressure fluctuations at different regions around the shock impingement location.