Numerical Simulation of Propagation of Unsteady Tribrachial Flames in Laminar Non-Premixed Jets

Authors

  • Nikhil Anto V. Department of Mechanical Engineering, SSN College of Engineering, Kalavakkam
  • Sandeepak M. Department of Mechanical Engineering, SSN College of Engineering, Kalavakkam
  • Santhosh Manikandan S. Department of Mechanical Engineering, SSN College of Engineering, Kalavakkam
  • Vetrivel S. Department of Mechanical Engineering, SSN College of Engineering, Kalavakkam
  • Soma Sundaram S. Department of Mechanical Engineering, SSN College of Engineering, Kalavakkam

DOI:

https://doi.org/10.26713/jims.v10i3.1205

Keywords:

Combustion, Numerical simulation, Tribrachial flame, Laminar flame, Flame propagation

Abstract

The characteristics of propagating Tribrachial Flames in non-premixed laminar jets have been investigated computationally, using a two dimensional model in ANSYS FLUENT 16.0. The edge of the propagating flame in a laminar jet regime has a Tribrachial flame structure: a lean premixed flame, a rich premixed flame, and a diffusion flame, all extending from a single location. This is usually observed in non-premixed combustion such occurring in burners. Such flames are important in the interaction of heat and mass transfer with chemical reactions in gas turbines and commercial burners. A computational study has been performed to assess the laminar tribrachial flame propagation in methane jets and to compare the tribrachial flame propagation for various flow rates. With an increase in the fuel jet Reynolds number, the tribrachial point is found to move closer to the nozzle. Additionally the tribrachial point is found to become larger with an increase in the Reynolds number.

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References

J.W. Dold, Flame propagation in a non-uniform mixture: analysis of a slowly varying triple flame, Combustion and Flame 76 (1989), 71 – 88.

N. Ishikawa, Flame structure and propagation through an interface of layered gases, Combustion Science and Technology 31 (1983), 109 – 117.

Y.S. Ko and S.H. Chung, Propagation of unsteady tribrachial flames in laminar non-premixed jets, Combustion and Flame 118 (1999), 151 – 163.

B.J. Lee, J.S. Kim and S.H. Chung, Effect of dilution on the liftoff of non-premixed jet flames, Twenty-Fifth Symposium (International) on Combustion, The Combustion Institute, 1994, 25 (1), 1175 – 1181.

H. Phillips, Flame in a Buoyant methane layer, Proceedings of Combustion Institute 10 (1965), 1277 – 1283.

G.R. Ruetsch, L. Vervisch and A. Liñán, Effects of heat release on triple flames, Physics of Fluids 7(6) (1995), 1447 – 1454.

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Published

2018-12-30
CITATION

How to Cite

V., N. A., M., S., S., S. M., S., V., & S., S. S. (2018). Numerical Simulation of Propagation of Unsteady Tribrachial Flames in Laminar Non-Premixed Jets. Journal of Informatics and Mathematical Sciences, 10(3), 489–494. https://doi.org/10.26713/jims.v10i3.1205

Issue

Vol. 10 No. 3 (2018)

Section

Research Articles

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