Modelling of the Curvature Term of the Flame Surface Density Transport Equation for Large Eddy Simulations
Joint Authors
Katragadda, Mohit
Chakraborty, Nilanjan
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-07
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
A simplified chemistry based three-dimensional Direct Numerical Simulation (DNS) database of freely propagating statistically planar turbulent premixed flames with a range of different values of turbulent Reynolds number has been used for the a priori modelling of the curvature term of the generalised Flame Surface Density (FSD) transport equation in the context of Large Eddy Simulation (LES).
The curvature term has been split into the contributions arising due to the reaction and normal diffusion components of displacement speed and the term originating from the tangential diffusion component of displacement speed.
Subsequently, these contributions of the curvature term have been split into the resolved and subgrid contributions.
New models have been proposed for the subgrid curvature terms arising from the combined reaction and normal diffusion components and the tangential diffusion component of displacement speed.
The performances of the new model and the existing models for the subgrid curvature term have been compared with the corresponding quantity extracted from the explicitly filtered DNS data.
The new model for the subgrid curvature term is shown to perform satisfactorily in all cases considered in the current study, accounting for wide variations in LES filter size.
American Psychological Association (APA)
Katragadda, Mohit& Chakraborty, Nilanjan. 2012. Modelling of the Curvature Term of the Flame Surface Density Transport Equation for Large Eddy Simulations. Journal of Combustion،Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-507779
Modern Language Association (MLA)
Katragadda, Mohit& Chakraborty, Nilanjan. Modelling of the Curvature Term of the Flame Surface Density Transport Equation for Large Eddy Simulations. Journal of Combustion No. 2012 (2012), pp.1-12.
https://search.emarefa.net/detail/BIM-507779
American Medical Association (AMA)
Katragadda, Mohit& Chakraborty, Nilanjan. Modelling of the Curvature Term of the Flame Surface Density Transport Equation for Large Eddy Simulations. Journal of Combustion. 2012. Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-507779
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507779