Title: Evaluating the strain and fuel concentration of counterflow diffusion flames by selected species

Authors: Heidi Bohm, Francois Lacas

Addresses: Institut fur Physikalische Chemie I, Universitat Bielefeld, 25 Universitatsstr., 33615 Bielefeld, Germany. ' Laboratoire E.M2.C du CNRS et de l'ECP, Grande Voie des Vignes, 92295, Chatenay Malabry, France

Abstract: In the present investigation, the response of methane-nitrogen/air and methane/air counterflow diffusion flames to the strain rate and to the initial fuel concentration was studied at atmospheric pressure by computations. The reaction model used was related to experimental data from the literature. After the successful check of the model, the study concentrated on finding suitable species for the characterisation of strained reactive flows. It suggests the evaluation of strain rates and initial fuel concentrations based on the concentrations of only a few key species which are also able to indicate the limit at which the pollutions of polyaromatic hydrocarbons (PAHs) can be minimised.

Keywords: strain rate; counterflow diffusion flames; PAH; control parameters; strained reactive flows; fuel concentration; selected species; polyaromatic hydrocarbons; pollution reduction; convective transport; molecular transport; combustion optimisation.

DOI: 10.1504/PCFD.2005.007429

Progress in Computational Fluid Dynamics, An International Journal, 2005 Vol.5 No.7, pp.420 - 425

Published online: 18 Jul 2005 *

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