@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 = "Funding Information: Research was sponsored by the Army Research Laboratory and was accomplished under Cooperative Agreement Number W911NF-19-2-0077. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Laboratory or the U.S. Government. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein. 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",
}