Hypersonic Fluid–Structure Interactions in Compression Corner Shock-Wave/Boundary-Layer Interaction. Whalen, T. J., Schöneich, A. G., Laurence, S. J., Sullivan, B. T., Bodony, D. J., Freydin, M., Dowell, E. H., & Buck, G. M. AIAA Journal, 58(9):4090–4105, 2020. doi abstract bibtex The fluid–structure interaction of a flexible panel exposed to a ramp-induced shock-wave/boundary-layer interaction (SWBLI) at Mach 6 is investigated experimentally for transitional and turbulent incoming boundary layers. Panel deformations are measured using photogrammetry enabled by a new marker-tracking routine, whereas pressure fluctuations are obtained with fast-response piezoresistive pressure transducers. The significance of aerothermal heating is evident in the nonlinear panel response: enhanced static deformations and frequency shifting are consistent with a temperature differential between the panel and its support structure, which induces compressive thermal strain and flexural softening. Time-domain and modal vibratory behavior are correlated to the SWBLI environment, and shear-layer reattachment near antinodes of certain mode shapes is identified as a source of enhanced panel excitation. Comparison with companion rigid-ramp experiments shows evidence of feedback into the downstream flowfield regime.
@article{whalen2020,
title = {Hypersonic {Fluid}–{Structure} {Interactions} in {Compression} {Corner} {Shock}-{Wave}/{Boundary}-{Layer} {Interaction}},
volume = {58},
issn = {0001-1452},
doi = {10.2514/1.J059152},
abstract = {The fluid–structure interaction of a flexible panel exposed to a ramp-induced shock-wave/boundary-layer interaction (SWBLI) at Mach 6 is investigated experimentally for transitional and turbulent incoming boundary layers. Panel deformations are measured using photogrammetry enabled by a new marker-tracking routine, whereas pressure fluctuations are obtained with fast-response piezoresistive pressure transducers. The significance of aerothermal heating is evident in the nonlinear panel response: enhanced static deformations and frequency shifting are consistent with a temperature differential between the panel and its support structure, which induces compressive thermal strain and flexural softening. Time-domain and modal vibratory behavior are correlated to the SWBLI environment, and shear-layer reattachment near antinodes of certain mode shapes is identified as a source of enhanced panel excitation. Comparison with companion rigid-ramp experiments shows evidence of feedback into the downstream flowfield regime.},
number = {9},
urldate = {2023-08-03},
journal = {AIAA Journal},
author = {Whalen, Thomas J. and Schöneich, Antonio Giovanni and Laurence, Stuart J. and Sullivan, Bryson T. and Bodony, Daniel J. and Freydin, Maxim and Dowell, Earl H. and Buck, Gregory M.},
year = {2020},
pages = {4090--4105},
}
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