Experimental and numerical study on laminar flame characteristics of methane oxyfuel mixtures highly diluted with CO2 (PDF)
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Experimental and numerical study on laminar flame characteristics of methane oxyfuel mixtures highly diluted with CO2 (PDF)
- 发表刊物：
- Energy & Fuels
- 摘要：
- Experimental and numerical study on laminar flame characteristics of methane oxyfuel mixtures highly diluted with CO2 was conducted using a constant volume chamber and CHEMKIN package. The effects of high CO2 dilution on combustion chemical reaction, flame instability and flame radiation of CH4/CO2/O2 mixtures were studied. The laminar burning velocities of CH4/CO2/O2 mixtures decrease with the increase of CO2 fraction. CO2 directly participates into the chemical reaction through the elementary reaction OH+CO=H+CO2 and inhibits the combustion process by the competition of H radial between the reverse reaction of OH+CO=H+CO2 and the reaction H+O2=O+OH. This effect is more obvious for highly diluted CO2 in the case of CH4/CO2/O2 mixtures. CO2 suppresses the flame instability by the combined effect of hydrodynamic and thermal-diffusive instabilities. The radiation of CH4 oxyfuel combustion is much stronger than that of CH4/air combustion mainly due to the existence of large fraction of CO2 in CH4/CO2/O2 flames, which will influence the wall temperature and temperature distribution in the gas turbine combustor.
- 合写作者：
- Xie YL, Wang JH, Zhang M, Gong J, Jin W, Huang ZH
- 卷号：
- 2013, 27(10): 6231-6237
- 页面范围：
- 6231-6237
- 是否译文：
- 否
- 发表时间：
- 2013-10-16