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 computational fluid dynamics (CFD) solutions that are experiencing NSV. 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 POD approach to the reduced-order modeling of NSV in turbomachinery. Modeling NSV 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.
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Developing a Reduced-Order Model of Nonsynchronous Vibration in Turbomachinery Using Proper-Orthogonal Decomposition Methods
Jeffrey P. Thomas
Jeffrey P. Thomas
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Stephen T. Clark
Fanny M. Besem
Robert E. Kielb
Jeffrey P. Thomas
Contributed by the Structures and Dynamics Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 15, 2014; final manuscript received August 30, 2014; published online November 18, 2014. Editor: David Wisler.
J. Eng. Gas Turbines Power. May 2015, 137(5): 052501 (11 pages)
Published Online: May 1, 2015
Article history
Received:
July 15, 2014
Revision Received:
August 30, 2014
Online:
November 18, 2014
Citation
Clark, S. T., Besem, F. M., Kielb, R. E., and Thomas, J. P. (May 1, 2015). "Developing a Reduced-Order Model of Nonsynchronous Vibration in Turbomachinery Using Proper-Orthogonal Decomposition Methods." ASME. J. Eng. Gas Turbines Power. May 2015; 137(5): 052501. https://doi.org/10.1115/1.4028675
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