Developing a Reduced-Order Model of Nonsynchronous Vibration in Turbomachinery Using Proper-Orthogonal Decomposition Methods
| Autor: | Robert E. Kielb, Stephen T. Clark, Fanny M. Besem, Jeffrey P. Thomas |
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| Rok vydání: | 2015 |
| Předmět: |
Engineering
business.industry Mechanical Engineering Energy Engineering and Power Technology Aerospace Engineering Structural engineering Computational fluid dynamics Reduced order Unsteady flow Vibration Fuel Technology Nuclear Energy and Engineering Control theory Principal component analysis Turbomachinery Proper orthogonal decomposition business Gas compressor |
| Zdroj: | Journal of Engineering for Gas Turbines and Power. 137 |
| ISSN: | 1528-8919 0742-4795 |
| DOI: | 10.1115/1.4028675 |
| Popis: | The paper develops a reduced-order model of non-synchronous 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 non-synchronous 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 non-synchronous vibration in turbomachinery. Modeling non-synchronous 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.Copyright © 2014 by ASME |
| Databáze: | OpenAIRE |
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