A Study of Halogen Flames Using a Zonal Theory

An approximate, integral method for the solution of the flame equations is outlined and applied to the interpretation of halogen flames. The theory allows an integral solution of the flame equations and contains no arbitrary constants other than those in the explicit approximations. Physical, thermodynamic, transport and rate parameters are from standard sources without modification. Most composition, temperature and pressure regimes are accessible with the exception of a few singular regions. The literature has been reviewed and the reliability of the theory has been evaluated by comparison with the experimental measurements of burning velocity and flame structure and other theoretical studies. The differences between theory and experiment generally lie within the dispersion of the experimental data. Halogen-hydrogen flames were investigated systematically using this tool. The effects of stoichiometry, initial temperature, pressure and dilution were calculated and tabulated in a convenient form which allows reconstruction of the profiles of some sixteen representative flames. It was concluded that zonal flame theory method provides a convenient, versatile tool for visualizing flame chemistry.