Abstract
A numerical model is developed aiming at investigating soot formation in ethylene counterflow diffusion flames at atmospheric pressure. In order to assess modeling limitations the mass and energy coupling between soot solid particles and gas-phase species are investigated in detail. A semi-empirical two equation model based on acetylene as the soot precursor is chosen for predicting soot mass fraction and number density. For the solid-phase the model describes particle nucleation, surface growth and oxidation. For the gas-phase a detailed kinetic mechanism is considered. Additionally, the effect of considering gas and soot radiation heat losses is evaluated in the optically thin limit approximation. The results show that for soot volume fractions higher than a certain threshold value the formation of the solid particles begins to significantly influence the gas-phase composition and temperature. The results also show that the inclusion of radiant heat losses decreases this influence.
Keywords: Combustion, Soot model, Coupling effect, Counterflow flames
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 7th European Combustion Meeting, March 30–April 2, 2015, Budapest, Hungary |
| Place of Publication | Budapest |
| Publisher | MEB |
| Pages | P3-76- |
| ISBN (Print) | 978-963-12-1257-0 |
| Publication status | Published - 2015 |
| Event | 7th European Combustion Meeting (ECM 2015), March 30-April 2, 2015, Budapest, Hungary - Hilton Budapest, Budapest, Hungary Duration: 30 Mar 2015 → 2 Apr 2015 http://ecm2015.combustioninstitute.hu/index.php/invitation/ |
Conference
| Conference | 7th European Combustion Meeting (ECM 2015), March 30-April 2, 2015, Budapest, Hungary |
|---|---|
| Abbreviated title | ECM 2015 |
| Country/Territory | Hungary |
| City | Budapest |
| Period | 30/03/15 → 2/04/15 |
| Internet address |