Abstract
Numerical computations were made of axisymmetric laminar jet diffusion flames taking into account detailed chemical kinetics and multicomponent diffusion. It was shown that preferential diffusion of heat and species causes significant amount of excess and deficit of enthalpy, and increase and decrease of mole fraction in the flame. These effects result in higher flame temperature than the maximum adiabatic temperature for the original fuel and/or significantly lower flame temperature than that estimated from the adiabatic temperature without preferential diffusion. The processes of the preferential diffusion effects were analyzed to reveal the factors inducing such higher and lower temperature. The present studies also emphasize the importance of the preferential diffusion effects in diffusion flames of high ambient pressure and different flow configurations.
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© 1995 Springer-Verlag
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Takagi, T., Xu, Z., Komiyama, M. (1995). Preferential diffusion effects in diffusion flames. In: Buckmaster, J., Takeno, T. (eds) Modeling in Combustion Science. Lecture Notes in Physics, vol 449. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-59224-5_8
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DOI: https://doi.org/10.1007/3-540-59224-5_8
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