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

Journal of Combustion

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

Chemistry

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