Understanding soot particle size evolution in laminar ethylene/air diffusion flames using novel soot coalescence models
| Autor: | Seth B. Dworkin, Armin Veshkini, Murray J. Thomson |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Ethylene
Materials science Meteorology General Chemical Engineering General Physics and Astronomy Energy Engineering and Power Technology 02 engineering and technology medicine.disease_cause 01 natural sciences 010305 fluids & plasmas chemistry.chemical_compound 020401 chemical engineering 0103 physical sciences medicine Physics::Chemical Physics 0204 chemical engineering Coalescence (physics) Diffusion flame Laminar flow General Chemistry Mechanics Soot Aerosol Fuel Technology chemistry Modeling and Simulation Particle diameter Particle size |
| Zdroj: | Combustion Theory and Modelling. 20:707-734 |
| ISSN: | 1741-3559 1364-7830 |
| Popis: | Two coalescence models based on different merging mechanisms are introduced. The effects of the soot coalescence process on soot particle diameter predictions are studied using a detailed sectional aerosol dynamic model. The models are applied to a laminar ethylene/air diffusion flame, and comparisons are made with experimental data to validate the models. The implementation of coalescence models significantly improves the agreement of prediction of particle diameters with the experimental data. Sensitivity of the soot prediction to the coalescence parameters is analysed. Finally, an update to the coalescence model based on experimental observations of soot particles in the flame oxidation regions has been introduced to improve its predicting capabilities. |
| Databáze: | OpenAIRE |
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