| Auteur | Rechercher : Liu, Fengshan1; Rechercher : Guo, Hongsheng1; Rechercher : Smallwood, Gregory1 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Institut de technologie des procédés chimiques et de l'environnement du CNRC
|
|---|
| Commanditaire | Rechercher : The Combustion Institute |
|---|
| Format | Texte, Article |
|---|
| Conférence | Canadian Section, 2002 Spring Technical Meeting : Windsor, ON, May 2002 |
|---|
| Sujet | CO2 replacement; freely-propagating planar flames; CH4/O2/N2/CO2 flames; adiabatic flame; burning velocity |
|---|
| Résumé | A numerical study was conducted to investigate the chemical effect of CO2 replacement of N2 in air on the burning velocity and structure of freely-propagating planar CH4/O2/N2/CO2 flames at atmospheric pressure. Detailed chemistry and complex thermal and transport properties were employed in the calculations. The chemical effect of CO2 was numerically separated from its effects of thermal and transport properties using the strategy developed previously by the authors. Numerical results indicate that the chemical effect of CO2 significantly reduces the burning velocity of CH4/O2/N2/CO2 flames. While the chemical effect of CO2 slightly lowers the mixture adiabatic flame temperature, the significant reduction of the burning velocity by the chemical effect of CO2 is primarily a direct consequence of the reduced temperature gradiant across the reaction zone. The three major reaction pathways of the chemical effect of CO2 were found to be (equation). The presence of CO2 in the fresh mixture plays a chemically inhibiting role through its competition for H radicals with (equation) leading to reduction of the chain branching rate |
|---|
| Date de publication | 2002 |
|---|
| Conditions d’utilisation | - Material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission.
|
|---|
| Condition d’accès | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Numéro du CNRC | NRCC 51484 |
|---|
| Numéro NPARC | 5082807 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 9cf9be85-9300-4570-b70a-f73a355a2259 |
|---|
| Enregistrement créé | 2009-12-11 |
|---|
| Enregistrement modifié | 2020-03-30 |
|---|
