LES modelling of nitric oxide (NO) formation in a propane-air turbulent reacting flame

Paul, S. C., Paul, M. C. and Saha, S. C. (2014) LES modelling of nitric oxide (NO) formation in a propane-air turbulent reacting flame. American Journal of Fluid Dynamics, 4(2), pp. 69-78.

Abstract

Large Eddy Simulation (LES) technique is applied to investigate the nitric oxide (NO) formation in the propane-air flame inside a cylindrical combustor. In LES a spatial filtering is applied to the governing equations to separate the flow field into large scale eddies and small scale eddies. The large scale eddies which carry most of the turbulent energy are resolved explicitly while the unresolved small scale eddies are modelled. A Smagorinsky model with model constant Cs = 0.1 as well as a dynamic model has been employed for modelling of the sub-grid scale eddies, while the nonpremixed combustion process is modelled through the conserved scalar approach with laminar flamelet model. In NO formation model, the extended Zeldovich (thermal) reaction mechanism is taken into account through a transport equation for NO mass fraction. The computational results are compared with those of the experimental results investigated by Nishida and Mukohara [1] in co-flowing turbulent flame.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Paul, Mr Sreebash and Paul, Professor Manosh
• Authors: Paul, S. C., Paul, M. C., and Saha, S. C.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: American Journal of Fluid Dynamics
• Publisher: Scientific and Academic Publishing
• ISSN: 2168-4707
• ISSN (Online): 2168-4715
• Copyright Holders: Copyright © 2014 Scientific and Academic Publishing
• First Published: First published in American Journal of Fluid Dynamics 4(2):69-78
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher.