Hybrid Modeling for High-Speed Thermoelasticity

Student: Chris Weston

Sponsor: Air Force Research Lab

High-speed vehicles are often characteristics by many complex and extreme coupled interactions between the aerodynamics, heating, structural and flight dynamics. Accurate resolution of these physics requires high-fidelity modeling techniques but can become computationally expensive and, at times, prohibitive, particularly for hypersonic vehicles and large design spaces. Conversely, reduced order models (ROMs) are much more computationally efficient and robust but are unable to capture important local effects.

This project aims to close the gap between the two analyses by developing a hybrid-modeling framework to stitch localized high-fidelity effects into a ROM. The University of Michigan High Speed Vehicle (UM/HSV) simulation framework has been developed in this lab for over a decade, and it provides the test bed for this project. UM/HSV enables us to numerically “fly” a vehicle through a trajectory while evaluating the various physics. Methodology to stitch localized high-fidelity data into reduced order models will be implemented within UM/HSV.