Ignition and Flame Propagation in Sprays.
Abstract
Flame initiation and propagation through an air-fuel vapor-fuel drop system is numerically modeled in a cylindrical one-dimensional combustor. Using an unsteady formulation and allowing unsteady mass, momentum and heat transfer between the two phases, results have been obtained to observe the effects of activation energy, preexponential factor, intitial droplet size, initial temperature, stoichiometric ratio and diffusivity on the flame propagation. It is observed that the process is essentially unsteady. Also, unlike pre-mixed case, heterogeneous combustion gives rise to large variation in fuel-air ratio, which could produce a secondary diffusion flame in the wake of a propagating flame. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1979
- Accession Number
- ADA078889
Entities
People
- Suresh K. Aggarwal
- William A. Sirignano
Organizations
- Princeton University