Chapin, Vincent and Sers, Florence and Chassaing, Patrick
Global self-excited oscillations in a two-dimensional heated jet : a numerical simulation.
(1997)
Fluid mechanics and its application, 4. 9-15. ISSN 0926-5112
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 119kB |
Abstract
The aim of this work was to develop a numerical methodology to gain insight in the low-density jet behaviour with a nonlinear approach. Numerical simulations are shown to differentiate convective and absolute instability regimes and to capture a self-excited global mode in an open flow : the 2D hot jet. The first part is devoted to numerical methodology and its validation on this unsteady problem which is known to be noise sensitive. The second part presents numerical results. They confirm theoretical and experimental results on the development of self-exited global oscillations of the jet column when the density ratio is lower than its critical value. The global mode and its associated Hopf bifurcation are identified.
Item Type: | Article |
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HAL Id: | hal-03609959 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) |
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Deposited On: | 20 Jan 2009 09:19 |
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