Time-varying Linear Reduced Order Model for Hypersonic Aerothermoelastic Analysis

Damien Guého


The coupled analysis between the flight dynamics, structural dynamics, heat transfer, and hypersonic aerothermodynamics, viz. AeroThermoServoElasticity (ATSE), is a key ingredient for evaluating the performance, stability, and reliability of hypersonic vehicles. A thorough performance analysis for ATSE is computationally intractable with high fidelity models for each discipline. Hence, there is a need to develop accurate reduced order models (ROM) for aerothermodynamics as well as thermoelasticity. This work exploits the latest advances in dynamic system theory to develop a reduced order model for aerothermoelastic analysis. The Time-Varying Eigensystem Realization Algorithm (TVERA) is used to identify a linear time varying (LTV) model from a high fidelity computational framework with guaranteed observability. The simulations performed show a good agreement between the reduced-order and high fidelity models.

2021 AIAA SciTech Forum and Exposition, Virtual
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Damien Guého
Damien Guého
Aerospace Engineer

My research interests include data-driven modeling and system identification, analysis of complex dynamical systems, stochastic analysis and uncertainty quantification.