Large Eddy Simulation of a turbulent swirling coaxial jet
Date
2010-12-31T00:00:00Z
Advisors
Journal Title
Journal ISSN
Volume Title
Publisher
Inderscience
Department
Type
Article
ISSN
1468-4349
item.page.extent-format
Citation
Abstract
This work uses the Large Eddy Simulation (LES) technique to study velocity and passive scalar mixing along with intermittency of a spatially evolving turbulent coaxial swirl jet. The simulations captured the potential core and also predicted high level turbulence intensities in the inner mixing regions. The Probability Density Functions (PDFs) and radial intermittency plots revealed an intermittent mixing behaviour especially in the outer region of the flow where the fluctuations of velocity rapidly change from rotational to irrotational and vice versa. The PDF and radial intermittency profiles exhibit Gaussian and non- Gaussian distributions close to the jet centreline and away from the centreline, respectively.
Description
item.page.description-software
item.page.type-software-language
item.page.identifier-giturl
Keywords
coaxial jet swirl passive scalar mixing intermittency LES large eddy simulation
vortex breakdown flow field combustor model recirculation flames les