Approximation of flammablity region for natural gas-air-diluent mixtures (PDF)
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Approximation of flammablity region for natural gas-air-diluent mixtures (PDF)
- 发表刊物：
- J. Hazard. Mater.
- 摘要：
- The growing implementation of exhaust gas recirculation (EGR) in reducingNOx emissions of engine is of paramount motivation to perform a fundamental research on the flammability characteristics of fuel–air–diluent mixtures. In thiswork, the influences of EGR on the flammability
region of natural gas–air–diluent flames were experimentally studied in a constant volume bomb. An assumption of critical burning velocity at flammability limit is proposed to approximately determine the flammability region of these mixtures. Based on this assumption, an estimation
of the flammability map for natural gas–air–diluent mixtures was obtained by using the empirical formula of burning velocity data. The flammability regions of natural gas–air mixtures with EGR are plotted versus the EGR rate. From the comparison of estimated results and experimental measurements, it is suggested that the accuracy of prediction is largely dependent upon the formula of burning velocity used. Meanwhile, the influence of pressure on the critical burning velocity at flammability limit is also investigated. On the basis of the pressure
dependence criterion, the estimation was performed for the circumstance of high temperature and pressure, and the prediction results still agree well with those of experiments.
- 合写作者：
- Liao SY, Jiang DM, Huang ZH
- 卷号：
- 125(1-3): 23-28
- 页面范围：
- 23-28
- 是否译文：
- 否
- 发表时间：
- 2005-01-15