Proceedings of the
International Conference on Mechanical Engineering 2009
(ICME2009) 26- 28 December 2009, Dhaka, Bangladesh
 

ICME09-FM-11

NUMERICAL SIMULATION OF A CONFINED LAMINAR
DIFFUSION FLAME WITH VARIABLE PROPERTY
FORMULATION

B. K. MANDAL 1, A.K. CHOWDHURI 1 and A. J. BHOWAL 2
1Bengal Engineering and Science University, Howrah, India
2Heritage Institute of Technology, Kolkata, India

ABSTRACT

A numerical model is used for simulation of a confined axisymmetric laminar jet diffusion flame under normal gravity and pressure conditions to predict the velocity, temperature and species distributions. An explicit finite difference technique has been adopted for the numerical simulation of reacting flow with finite rate chemistry and variable thermodynamic and transport properties. The predictions match well with the experimental results available in the literature. A recirculation of ambient air is observed to extend from the exit plane into the domain adjacent to the wall. Radial velocity is never positive (away from the axis) in the solution domain. High temperature and high CO2 concentration zone are confined to a small radial distance.
 

Keywords: Diffusion flame, Recirculation, Temperature distribution.

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