An aerothermoelastic analysis framework with reduced-order modeling applied to composite panels in hypersonic flows

Daning Huang, Peretz P. Friedmann

Research output: Contribution to journalArticle

Abstract

This study describes the enhancement of a computational framework for aerothermoelasticity using novel model order reduction techniques and efficient coupling schemes. First, the fluid solver for hypersonic aerothermodynamics is accelerated using a reduced order model. The flexibility of the reduced order model is enhanced using a novel correction and scaling technique, which accounts for non-uniform temperature distribution, varying flight conditions and geometrical scales using analytical pointwise models. Secondly, based on the reduced order model, a tightly-coupled scheme and linearized stability analysis are developed for fast aerothermoelastic simulation of extended flight time and automatic identification of aerothermoelastic instabilities, respectively. The enhanced framework is accelerated by a factor of 104 so that near-real-time aerothermoelastic simulation is achieved. Finally, using the enhanced framework, the aerothermoelastic response of a generic skin panel is studied emphasizing the effect of flow orientation angle and material orthotropicity on the aerothermoelastic stability boundary. It is found that a combination of flow orientation angle and material orientation can significantly extend the aerothermoelastic stability boundary, i.e. the time elapsed before the onset of structural failure.

Original languageEnglish (US)
Article number102927
JournalJournal of Fluids and Structures
Volume94
DOIs
StatePublished - Apr 2020

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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