Particle Equilibrium Composition model for iron dust combustion

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Samenvatting

Flame propagation of iron powder in air is numerically studied. The present work introduces a chemical equilibrium model, which allows a detailed representation of the combustion products, phase transitions and detailed thermodynamics of the condensed phase. First, to validate the combustion of a single particle, numerical laser ignited single particle studies are performed and compared to experiments, where a very good agreement is obtained. A second series of simulations is performed on the propagation of laminar flames in iron/air mixtures for a wide range of equivalence ratios (φ = 0.2–1.8) using mono-dispersed particles having a diameter of 10 µm. Based on these simulations a multi-staged combustion process is identified, where each stage can be related to the formation of a different oxide. More importantly, the significance of including at least Fe3O4 in the model is demonstrated. This species contributes significantly to the burning velocity and flame temperature, as it is responsible for more than 25% of the total energy which can be released.
Originele taal-2Engels
Artikelnummer100115
Aantal pagina's10
TijdschriftApplications in Energy and Combustion Science
Volume13
DOI's
StatusGepubliceerd - mrt. 2023

Financiering

We would like to express our thanks to T. Hazenberg for his insightful discussions and feedback. Special thanks should be given to L. Choisez and Y. Wu from Max–Planck-Institut für Eisenforschung Düsseldorf for the exchange of views regarding the properties of iron(-oxides). This project has received funding from the European Research Council (ERC) under the European Union’ Horizon 2020 research and innovation program under Grant Agreement no. 884916. We would like to express our thanks to T. Hazenberg for his insightful discussions and feedback. Special thanks should be given to L. Choisez and Y. Wu from Max–Planck-Institut für Eisenforschung Düsseldorf for the exchange of views regarding the properties of iron(-oxides). This project has received funding from the European Research Council (ERC) under the European Union’ Horizon 2020 research and innovation program under Grant Agreement no. 884916 .

FinanciersFinanciernummer
European Union’s Horizon Europe research and innovation programme884916
Max-Planck-Institut fur Eisenforschung
European Research Council

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