| Novel analytical model for predicting the combustion characteristics of premixed flame propagation in lycopodium dust particles
Mehdi Bidabadi/Alireza Rahbari
The Journal of Mechanical Science and Technology, vol. 23, no. 9, pp.2417-2423, 2009
Abstract : This paper presents the effects of the temperature difference between gas and particle, different Lewis numbers, and
heat loss from the walls in the structure of premixed flames propagation in a combustible system containing uniformly
distributed volatile fuel particles in an oxidizing gas mixture. It is assumed that the fuel particles vaporize first to yield a
gaseous fuel, which is oxidized in a gas phase. The analysis is performed in the asymptotic limit, where the value of the
characteristic Zeldovich number is large. The structure of the flame is composed of a preheat zone, reaction zone, and
convection zone. The governing equations and required boundary conditions are applied in each zone, and an analytical
method is used for solving these equations. The obtained results illustrate the effects of the above parameters on the
variations of the dimensionless temperature, particle mass friction, flame temperature, and burning velocity for gas and
particle.
Keyword : Analytical model; Different Lewis numbers; Heat loss effect; Flame temperature; Burning velocity |
