An experimental/computational investigation of the response of a compliant panel to turbulent and transitional shock-wave/boundary-layer interactions in hypersonic flow
Abstract
This work proposes a combined experimental/numerical study of the fluid-structure interaction (FSI) induced by a flexible panel exposed to a two-dimensional hypersonic shock-wave/boundary-layer interaction (SWBLI), under both turbulent and transitional upstream boundary-layer conditions. The proposed investigation will take advantage of newly developed hypersonic experimental facilities and capabilities at the University of Maryland (UMD), access to existing hypersonic facilities at NASA Langley through an AFOSR/NASA cooperative agreement, and a state-of-the-art computational infrastructure at the University of Illinois, Urbana-Champaign (UIUC). Experiments will be performed on a flat-plate/ramp configuration to produce a planar SWBLI, initially with a fully turbulent incoming boundary layer, with the compliant panel located within the SWBLI region either upstream or downstream of the plate-ramp junction. The ramp angle will be varied to produce a range of interaction strengths at both Mach 6 (Langley 20” Mach-6 tunnel) and Mach 8 (UMD hypersonic Ludwieg tube). Various measurement techniques will be implemented, including fast-response pressure transducers, high-speed schlieren and temperature sensitive paint, and marker-tracking photogrammetry for panel deformation measurements.Numerical simulations will be performed to analyze the transient panel excitation from flow start-up and the thermal state of the panel under experimental conditions. Subsequent experiments will investigate cases with a transitional incoming boundary layer; both natural transition and roughness-induced transition (to produce a non-spanwise-uniform transition front across the panel) will be studied.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 09, 2018
- Source ID
- FA95501810035
Entities
People
- Stuart Laurence
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Maryland