Numerical Simulation of Indane -Air Turbulent Diffusion
                                 Flames

Chandra V Pakala, Dr. Kevin M Lyons
Department of Mechanical And Aero Space Engineering
North Carolina State University
Raleigh - U.S.A -27606
Email : cvpakala@eos.ncsu.edu

Dr. T.Sundararajan and U.S.P.Shet
Department of Mechanical Engineering
Indian Institute of Technology
Madras, India.

Abstract

This Study deals with the numerical investigation of a chemically reacting
Indane ( 90 % Butane, and 10% Propane, Domestic gas for Cooking in India) gas
jet which issues into a quiescent atmosphere. Assuming fuel-air mixing to be
the rate controlling process (i.e.Infinite Chemical kinetics) the Shvab
Zel'dovich formulation has been employed for analysing the turbulent diffusion
flame characteristics. A transient Finite Element Formulation scheme in terms
of the primitive variables ( u, v, p ) and the Shvab- Zel'dovich variables has
been implemented for studying the axisymmetric reacting jet problem. The
Galerkin's weighted residual approach with 4-noded elements has been adopted
for spatial discretization.

Numerical predictions for the mixing characteristics of the reacting jet have
been carried out for various Reynolds numbers, and results have been obtained
for the axial momentum decay, jet spread, and entrained mass flow rate. The
axial and radial variations of temperature and mass concentrations of fuel/
oxidizer species have been predicted. The variation of flame height with
Reynolds number is also obtained. The theoretical results have been validated
against the experimental results available in the literature.A good agreement
between numerical and experimental results were found.