Title: Numerical study of non-premixed turbulent combustion in opposed jet flows

Authors: Lale Demiraydin, Jurg Gass, Dimos Poulikakos

Addresses: Laboratory for Thermodynamics in Emerging Technologies, Swiss Federal Institute of Technology, ETH-Zentrum, Lowenstr 42, CH-8092 Zurich, Switzerland. ' Laboratory for Thermodynamics in Emerging Technologies, Swiss Federal Institute of Technology, ETH-Zentrum, Lowenstr 42, CH-8092 Zurich, Switzerland. ' Laboratory for Thermodynamics in Emerging Technologies, Swiss Federal Institute of Technology, ETH-Zentrum, Lowenstr 42, CH-8092 Zurich, Switzerland '

Abstract: In this work, the numerical modeling of the non-premixed turbulent opposed jet flames is studied with an Eulerian composition PDF transport equation method. The two different turbulence models, κ-ε model and the Reynolds stress model are used, which cause the different modeling of the unclosed terms in PDF transport equation. For the validation of the numerical simulations, the experimental results of a counter flow burner which is built and measured by Mastorakos are used. The flame is near the extinction limits and has high strain rates; low residence times and low temperatures are observed in the stagnation plane. The goal is to investigate the capabilities of the models in predicting the opposed jet configuration and modify the models due to the flow properties of opposed jets.

Keywords: opposed jet flames; turbulent combustion; probability density function model.

DOI: 10.1504/PCFD.2003.003780

Progress in Computational Fluid Dynamics, An International Journal, 2003 Vol.3 No.2/3/4, pp.53 - 60

Published online: 24 Dec 2003 *

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