Single and Multivariate Statistics of Jet-Induced Pressure Fluctuations over an Infinite Plate
Motivated by the problem of the installation effects of modern turbofan engines, we experimentally investigated the interaction between a compressible subsonic jet and a tangential flat plate. Measurements of wall pressure fluctuations were performed in a semi-anechoic environment addressing the eff...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/13/4605 |
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| author | Stefano Meloni Roberto Camussi Alessandro Di Marco Matteo Mancinelli |
| author_facet | Stefano Meloni Roberto Camussi Alessandro Di Marco Matteo Mancinelli |
| author_sort | Stefano Meloni |
| collection | DOAJ |
| description | Motivated by the problem of the installation effects of modern turbofan engines, we experimentally investigated the interaction between a compressible subsonic jet and a tangential flat plate. Measurements of wall pressure fluctuations were performed in a semi-anechoic environment addressing the effect of several governing parameters, such as the stream-wise and span-wise location, the jet Mach number and the radial distance of the plate surface from the jet axis. The statistical properties of the wall pressure signals were analyzed in terms of both power spectra and cross-correlations, with the latter providing the estimation of the phase speed. The analysis is also carried out in the time-frequency domain through the application of the wavelet transform to further characterize the dynamics of the wall pressure signatures. |
| first_indexed | 2024-03-10T18:43:49Z |
| format | Article |
| id | doaj.art-b0a61bfc862d44ba980f56a271e49641 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T18:43:49Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-b0a61bfc862d44ba980f56a271e496412023-11-20T05:42:05ZengMDPI AGApplied Sciences2076-34172020-07-011013460510.3390/app10134605Single and Multivariate Statistics of Jet-Induced Pressure Fluctuations over an Infinite PlateStefano Meloni0Roberto Camussi1Alessandro Di Marco2Matteo Mancinelli3Department of Engineering, University of RomaTre, 00185 Rome, ItalyDepartment of Engineering, University of RomaTre, 00185 Rome, ItalyDepartment of Engineering, University of RomaTre, 00185 Rome, ItalyDépartement Fluides, Thermique et Combustion, Institut Pprime—CNRS-Université de Poitiers-ENSMA, Chasseneuil-du-Poitou, 86000 Poitiers, FranceMotivated by the problem of the installation effects of modern turbofan engines, we experimentally investigated the interaction between a compressible subsonic jet and a tangential flat plate. Measurements of wall pressure fluctuations were performed in a semi-anechoic environment addressing the effect of several governing parameters, such as the stream-wise and span-wise location, the jet Mach number and the radial distance of the plate surface from the jet axis. The statistical properties of the wall pressure signals were analyzed in terms of both power spectra and cross-correlations, with the latter providing the estimation of the phase speed. The analysis is also carried out in the time-frequency domain through the application of the wavelet transform to further characterize the dynamics of the wall pressure signatures.https://www.mdpi.com/2076-3417/10/13/4605jet noisewall pressure fluctuationswavelet |
| spellingShingle | Stefano Meloni Roberto Camussi Alessandro Di Marco Matteo Mancinelli Single and Multivariate Statistics of Jet-Induced Pressure Fluctuations over an Infinite Plate Applied Sciences jet noise wall pressure fluctuations wavelet |
| title | Single and Multivariate Statistics of Jet-Induced Pressure Fluctuations over an Infinite Plate |
| title_full | Single and Multivariate Statistics of Jet-Induced Pressure Fluctuations over an Infinite Plate |
| title_fullStr | Single and Multivariate Statistics of Jet-Induced Pressure Fluctuations over an Infinite Plate |
| title_full_unstemmed | Single and Multivariate Statistics of Jet-Induced Pressure Fluctuations over an Infinite Plate |
| title_short | Single and Multivariate Statistics of Jet-Induced Pressure Fluctuations over an Infinite Plate |
| title_sort | single and multivariate statistics of jet induced pressure fluctuations over an infinite plate |
| topic | jet noise wall pressure fluctuations wavelet |
| url | https://www.mdpi.com/2076-3417/10/13/4605 |
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