OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Global self-excited oscillations in a two-dimensional heated jet : a numerical simulation

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, vol. 4 . pp. 9-15. ISSN 0926-5112

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
116Kb

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
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Statistics:download
Deposited By:Vincent Chapin

Repository Staff Only: item control page