Effects of Turbulent Reynolds Number on the Displacement Speed Statistics in the Thin Reaction Zones Regime of Turbulent Premixed Combustion
Joint Authors
Klein, Markus
Chakraborty, Nilanjan
Cant, R. S.
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-06-09
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
The effects of turbulent Reynolds number on the statistical behaviour of the displacement speed have been studied using three-dimensional Direct Numerical Simulation of statistically planar turbulent premixed flames.
The probability of finding negative values of the displacement speed is found to increase with increasing turbulent Reynolds number when the Damköhler number is held constant.
It has been shown that the statistical behaviour of the Surface Density Function, and its strain rate and curvature dependence, plays a key role in determining the response of the different components of displacement speed.
Increasing the turbulent Reynolds number is shown to reduce the strength of the correlations between tangential strain rate and dilatation rate with curvature, although the qualitative nature of the correlations remains unaffected.
The dependence of displacement speed on strain rate and curvature is found to weaken with increasing turbulent Reynolds number when either Damköhler or Karlovitz number is held constant, but the qualitative nature of the correlation remains unaltered.
The implications of turbulent Reynolds number effects in the context of Flame Surface Density (FSD) modelling have also been addressed, with emphasis on the influence of displacement speed on the curvature and propagation terms in the FSD balance equation.
American Psychological Association (APA)
Chakraborty, Nilanjan& Klein, Markus& Cant, R. S.. 2011. Effects of Turbulent Reynolds Number on the Displacement Speed Statistics in the Thin Reaction Zones Regime of Turbulent Premixed Combustion. Journal of Combustion،Vol. 2011, no. 2011, pp.1-19.
https://search.emarefa.net/detail/BIM-474356
Modern Language Association (MLA)
Chakraborty, Nilanjan…[et al.]. Effects of Turbulent Reynolds Number on the Displacement Speed Statistics in the Thin Reaction Zones Regime of Turbulent Premixed Combustion. Journal of Combustion No. 2011 (2011), pp.1-19.
https://search.emarefa.net/detail/BIM-474356
American Medical Association (AMA)
Chakraborty, Nilanjan& Klein, Markus& Cant, R. S.. Effects of Turbulent Reynolds Number on the Displacement Speed Statistics in the Thin Reaction Zones Regime of Turbulent Premixed Combustion. Journal of Combustion. 2011. Vol. 2011, no. 2011, pp.1-19.
https://search.emarefa.net/detail/BIM-474356
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-474356