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Title: Characterization of structural response to hypersonic boundary-layer transition

Journal Article · · AIAA Journal
DOI:https://doi.org/10.2514/1.j054607· OSTI ID:1259865
 [1];  [1];  [1];  [1];  [2]
  1. The Ohio State Univ., Columbus, OH (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

The inherent relationship between boundary-layer stability, aerodynamic heating, and surface conditions makes the potential for interaction between the structural response and boundary-layer transition an important and challenging area of study in high-speed flows. This paper phenomenologically explores this interaction using a fundamental two-dimensional aerothermoelastic model under the assumption of an aluminum panel with simple supports. Specifically, an existing model is extended to examine the impact of transition onset location, transition length, and transitional overshoot in heat flux and fluctuating pressure on the structural response of surface panels. Transitional flow conditions are found to yield significantly increased thermal gradients, and they can result in higher maximum panel temperatures compared to turbulent flow. Results indicate that overshoot in heat flux and fluctuating pressure reduces the flutter onset time and increases the strain energy accumulated in the panel. Furthermore, overshoot occurring near the midchord can yield average temperatures and peak displacements exceeding those experienced by the panel subject to turbulent flow. Lastly, these results suggest that fully turbulent flow does not always conservatively predict the thermo-structural response of surface panels.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1259865
Report Number(s):
SAND-2015-5512J; 594845
Journal Information:
AIAA Journal, Journal Name: AIAA Journal; ISSN 0001-1452
Publisher:
AIAACopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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Cited By (1)

Interplay of Surface Deformation and Shock-Induced Separation in Shock/Boundary-Layer Interactions journal December 2017