Pascal, Lucas and Piot, Estelle and Casalis, Grégoire
Global linear stability analysis of flow in a lined duct.
(2017)
Journal of Sound and Vibration, 140. 19-34. ISSN 0022-460X
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 3MB |
Official URL: https://doi.org/10.1016/j.jsv.2017.08.007
Abstract
Eigenmodes of the linearised Euler equations are computed in order to study lined flow duct global stability. A simplified configuration is considered and the governing equations are discretised by means of the discontinuous Galerkin method. A biorthogonal technique is used to decompose the global eigenfunctions into local eigenmodes. The system dynamics switches from noise amplifier to resonator as the length of the liner is increased. The global mode in the liner region is shown to be mainly composed of a hydrodynamic unstable wave and a left-running acoustic mode.
| Item Type: | Article |
|---|---|
| HAL Id: | hal-01697793 |
| Audience (journal): | International peer-reviewed journal |
| Uncontrolled Keywords: | |
| Institution: | Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE) French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE) |
| Statistics: | download |
| Deposited By: | Lucas Pascal |
| Deposited On: | 31 Jan 2018 10:52 |
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