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Nonlinear POD reduced order model for limit cycle oscillation prediction EI Scopus
会议论文 | 2010
Abstract&Keyword Cite

Abstract :

For the amplitude of the unsteady flow oscillation is large or large changes occur in the mean background flow such as limit cycle oscillation, the traditional proper orthogonal decomposition reduced order model based on linearized time or frequency domain small disturbance solvers can not capture the main nonlinear features. A new nonlinear reduced order model based on dynamically nonlinear flow equation was investigated. The nonlinear second order snapshot equation in time domain for proper orthogonal decomposition basis construction is obtained from the Taylor series expansion of the flow solver. The NLR 7301 Airfoil Configuration was used to validate the capability and efficiency of the new nonlinear reduced order model. The simulation results indicate that the proposed new reduced order model can capture the limit cycle oscillation of aeroelastic system very well, while the traditional proper orthogonal decomposition reduced order model will loses its way. Copyright © 2010 by the American Institute of Aeronautics and Astronautics, Inc.

Keyword :

Airfoil configuration Limit Cycle Oscillation (LCO) Non-linear flow equations Nonlinear features Proper orthogonal decompositions Reduced order models Small disturbances Taylor series expansions

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GB/T 7714 Chen, Gang , Li, Yue Ming , Yan, Gui Rong . Nonlinear POD reduced order model for limit cycle oscillation prediction [C] . 2010 .
MLA Chen, Gang 等. "Nonlinear POD reduced order model for limit cycle oscillation prediction" . (2010) .
APA Chen, Gang , Li, Yue Ming , Yan, Gui Rong . Nonlinear POD reduced order model for limit cycle oscillation prediction . (2010) .
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