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Journal of Mathematical Chemistry

, Volume 53, Issue 1, pp 386–401 | Cite as

Effects of reaction reversibility on ignition and flame propagation

  • Cong Li
  • Yunchao Wu
  • Zheng Chen
Original Paper
  • 181 Downloads

Abstract

Chemical reactions in high-temperature combustion are reversible and reaction reversibility might have a great impact on fundamental combustion processes such as ignition and flame propagation. In this study, ignition and propagation of spherical flames with a reversible reaction are analyzed using the large-activation-energy asymptotic method. Analytical correlations are derived to describe the change of spherical flame propagation speed and flame temperature with flame radius. The reversibility parameter, fuel Lewis number, and ignition power are included in these correlations. These correlations can predict different flame regimes and transitions among the ignition kernel, flame ball, propagating spherical flame, and planar flame. Therefore, based on these correlations spherical flame propagation and initiation are then investigated with the emphasis on assessing the impact of reaction reversibility. It is found that similar to heat loss, reaction reversibility can greatly affect spherical flame propagation speed, Markstein length, flame ball radius, minimum ignition power, and critical ignition radius. Moreover, it is demonstrated that the influence of reaction reversibility depends on fuel Lewis number.

Keywords

Ignition Spherical flame propagation Reversible reaction Markstein length Lewis number 

Notes

Acknowledgments

This work was supported by National Natural Science Foundation of China (Nos. 51322602 and 51136005), Doctoral Fund of Ministry of Education of China (No. 20120001110080), and State Key Laboratory of Engines at Tianjin University (No. K2012-02).

Supplementary material

10910_2014_430_MOESM1_ESM.doc (350 kb)
Supplementary material 1 (doc 349 KB)

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.State Key Laboratory for Turbulence and Complex Systems (SKLTCS), Department of Mechanics and Engineering Science, College of EngineeringPeking UniversityBeijingChina
  2. 2.Department of Aeronautics and Astronautics, College of EngineeringPeking UniversityBeijingChina
  3. 3.Department of Mechanical EngineeringUniversity of ConnecticutStorrsUSA

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