The fluid-thermal-structural interactions of a compliant panel embedded in a compression ramp are explored experimentally at Mach 6. The panel structural response is investigated for turbulent and transitional shock-wave/boundary-layer interactions at five distinct interaction strengths and up to four different pressure differentials. Upstream of the compression corner, fast-response piezoresistive pressure transducers show the feedback of the panel vibrations and static deflection on the upstream pressure fluctuations. The magnitude of the pressure fluctuation rms shows a reduction in the upstream disturbances when a pressure differential is applied across the compliant panel. Photogrammetry and IR thermography are used simultaneously to measure the panel deformations and surface temperature. Panel deformation, frequency shifting, and frequency bifurcation are consistent with post-thermal-buckling behavior.
Hypersonic Fluid-Thermal-Structural Interactions on a Compression Ramp with an Embedded Compliant Panel
AIAA AVIATION Forum and Exposition ; 2023 ; San Diego, CA, US
Conference paper
No indication
English
boundary layer , power spectral density , spectral density , frequency domain , IR , flow thermal structure interaction , infrared thermography , Fluid Mechanics and Thermodynamics , FTSI , pressure sensors , natural frequencies , shock wave boundary layer interaction , compliant panel , FSI , turbulent , transitional , hypersonic , compression corner , SWBLI , flow structure interraction