1207 Simulation of a CH_4-air Turbulent Diffusion Flame by Turbulent Diffusion Combustion Model Using Chemical Equilibrium Combined with the Eddy Dissipation Concept for Reducing Detailed Chemical Mechanisms

2009 ◽  
Vol 2009.84 (0) ◽  
pp. _12-7_
Author(s):  
Kazui FUKUMOTO ◽  
Ryoto SAKAI ◽  
Yoshifumi OGAMI
Keyword(s):  
Chemical Equilibrium ◽  
Diffusion Flame ◽  
Turbulent Diffusion ◽  
Combustion Model ◽  
Diffusion Combustion ◽  
Turbulent Diffusion Flame ◽  
Chemical Mechanisms ◽  
Turbulent Diffusion Combustion ◽  
Detailed Chemical

Simulation of H2-Air Turbulent Diffusion Flame by the Combustion Model Using Chemical Equilibrium Combined With the Eddy Dissipation Concept

2009 ◽  
Author(s):  
Kazui Fukumoto ◽  
Yoshifumi Ogami
Keyword(s):  
Chemical Equilibrium ◽  
Diffusion Flame ◽  
Turbulent Diffusion ◽  
Combustion Products ◽  
Combustion Model ◽  
Intermediate Species ◽  
Turbulent Diffusion Flame ◽  
Chemical Mechanisms ◽  
Equilibrium Method ◽  
Detailed Chemical

This research aims at developing a turbulent diffusion combustion model based on the chemical equilibrium method and chemical kinetics for simplifying complex chemical mechanisms. This paper presents a combustion model based on the chemical equilibrium method and the eddy dissipation concept (CE-EDC model); the CE-EDC model is validated by simulating a H2-air turbulent diffusion flame. In this model, the reaction rate of fuels and intermediate species is estimated by using the equations of the EDC model. Further, the reacted fuels and intermediate species are assumed to be in chemical equilibrium; the amount of the other species is determined from the amount of the reacted fuels, intermediate species, and air as reactants by using the Gibbs free energy minimization method. An advantage of the CE-EDC model is that the amount of the combustion products can be determined without using detailed chemical mechanisms. The results obtained by using this model were in good agreement with the experimental and computational data obtained by using the EDC model. Using this model, the amount of combustion products can be calculated without using detailed chemical mechanisms. Further, the accuracy of this model is same as that of the EDC model.

Simulation of a CO-H2-Air Turbulent Diffusion Flame by the Chemical Equilibrium Method With a Few Chemical Reactions

2008 ◽  
Author(s):  
Kazui Fukumoto ◽  
Yoshifumi Ogami
Keyword(s):  
Chemical Reactions ◽  
Chemical Equilibrium ◽  
Diffusion Flame ◽  
Turbulent Diffusion ◽  
Equilibrium Model ◽  
Combustion Products ◽  
Turbulent Diffusion Flame ◽  
Chemical Mechanisms ◽  
Computational Data ◽  
Chemical Equilibrium Model

The aim of our research is to build a model that can evaluate the amount of combustion products by using the chemical equilibrium method with a few chemical reactions. This paper presents an eddy dissipation concept/chemical equilibrium model (EDC/CE) and validates it by simulating a CO-H2 air turbulent diffusion flame. The obtained results were compared with Correa’s experimental data, Gran’s computational data, and the computational data obtained by using a chemical equilibrium model in FLUENT. An advantage of the EDC/CE model is that the amount of any combustion products are obtained without using detailed chemical mechanisms. The results obtained by the EDC/CE model are in good agreement with the reference data. With the combustion model that we have developed, the amount of combustion products can be calculated without detail chemical mechanisms, and the accuracy of this model is in the same order as that of the EDC model.

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