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• W1991765968 abstract "New mathematical post-processing tools are proposed to investigate the noise emission in the well known cavity flow. Based on the causality principle, Proper Orthogonal Decomposition and Quadratic Stochatic Estimation are successively implemented to access the aerodynamic events which contribute to the main noise emission in such a flow. Proper Orthogonal Decomposition is firstly used to extract selected flow structure events. Based on the knowledge of these events, the Quadratic Stochastic Estimation of the far acoustic pressure field is performed. Such methodology is successively applied to 2-D and 3-D numerical database of a flow over a cavity. In the 2-D test case, it is then demonstrated that POD can extract relevant velocity data information which can be associated with selected frequencies in the far acoustic field. Conversely, in the 3-D test case, it appears that the three dimensional flow structures may have a signature in the whole POD basis. Then, some difficulties may appear in interpreting the QSE recontructed pressure field using as reference data selected flow events deduced from the POD basis. However, the whole results show the great potential of the QSE procedure coupling to POD to analyze experimental databases." @default.
• W1991765968 created "2016-06-24" @default.
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• W1991765968 date "2009-05-11" @default.
• W1991765968 modified "2023-09-23" @default.
• W1991765968 title "Aeroacoustic Analysis of Cavity Flows Using Quadratic Stochastic Estimation Coupled with Proper Orthogonal Decomposition" @default.
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• W1991765968 doi "https://doi.org/10.2514/6.2009-3358" @default.
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