Developing a reduced-order model of non-synchronous vibration in turbomachinery using proper-orthogonal decomposition methods


Conference Paper

Copyright © 2014 by ASME. The paper develops a reduced-order model of nonsynchronous vibration (NSV) using proper orthogonal decomposition (POD) methods. The approach was successfully developed and implemented, requiring between two and six POD modes to accurately predict CFD solutions that are experiencing nonsynchronous vibration. This POD method was first developed and demonstrated for a transversely-moving, two-dimensional cylinder in cross-flow. Later, the method was used for the prediction of CFD solutions for a two-dimensional compressor blade. This research is the first to offer a proper orthogonal decomposition approach to the reduced-order modeling of nonsynchronous vibration in turbomachinery. Modeling nonsynchronous vibration is especially challenging because NSV is caused by complicated, unsteady flow dynamics; this initial study helps researchers understand the causes of NSV, and aids in the future development of predictive tools for aeromechanical design engineers.

Full Text

Duke Authors

Cited Authors

  • Clark, ST; Besem, FM; Kielb, RE; Thomas, JP

Published Date

  • January 1, 2014

Published In

  • Proceedings of the Asme Turbo Expo

Volume / Issue

  • 7B /

International Standard Book Number 13 (ISBN-13)

  • 9780791845776

Digital Object Identifier (DOI)

  • 10.1115/GT2014-25547

Citation Source

  • Scopus