@inproceedings{89b44357071d42d8803d456831fed305,
title = "Reduced-order modeling of extreme speed turbochargers",
abstract = "In order to improve their efficiency and performance, aircraft intermittent combustion engines often incorporate turbochargers that are adapted from ground-based applications. These turbochargers experience conditions outside of their design operating envelope and are found to experience highcycle fatigue brought on by aerodynamically-induced blade resonances. The onset of fluid-structural interactions, such as flutter and forced response, in turbochargers at these conditions has not been extensively studied. A reduced-order model of the aeroelastic response of the turbine is developed using the Euler-Lagrange equation informed by numerical data from uncoupled computational fluid dynamic (CFD) and computational structural dynamic (CSD) calculations. The structural response of the reduced-order model is derived from a method of assumed modes approach. The unsteady fluid response is described by a modified version of piston theory as a first step towards including inhomogeneous aerodynamic forcing. Details of the reduced order model are given. The capability of the reduced-order model to predict the presence of flutter from a subset of the uncoupled numerical simulation data is discussed.",
keywords = "Aeroelasticity, Fluid-structure interaction, Flutter, Turbocharger, Turbomachinery, Vibration",
author = "Fellows, {David W.} and Bodony, {Daniel J.} and McGowan, {Ryan C.}",
note = "Publisher Copyright: {\textcopyright} 2021 American Society of Mechanical Engineers (ASME). All rights reserved.; ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition, GT 2021 ; Conference date: 07-06-2021 Through 11-06-2021",
year = "2021",
doi = "10.1115/GT2021-58759",
language = "English (US)",
series = "Proceedings of the ASME Turbo Expo",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "Ceramics and Ceramic Composites; Coal, Biomass, Hydrogen, and Alternative Fuels; Microturbines, Turbochargers, and Small Turbomachines",
}