同济大学学报（自然科学版）2011，Vol.39Issue(10)：1557-1562,6.DOI:10.3969/j.issn.0253-374x.2011.10.027
稀释气体对甲烷层流预混火焰燃烧速度的影响
Effects of Diluents Addition on Laminar Burning Velocity of Premixed Methane Flames
摘要
Abstract
Based on the GRI-Nfech 3.0 mechanism, the premixed laminar combustion characteristics of methane-air-diluent mixtures were investigated by using PREMKED Code. Several fundamental parameters,such as flame structure, laminar burning velocity,and flame thickness, were calculated at different equivalence ratios, initial pressures, and dilution ratios. It was found that increasing the dilution ratio in the mixture would lead to a decrease in laminar burning velocity and an increase of flame thickness. As a result, the hydrodynamic instability of methane-air laminar flame was suppressed with the addition of diluents, especially in the condition of CO2 dilution. When the initial pressure increased, the laminar burning velocity and flame thickness decreased accordingly. However.a further increase of the initial pressure did not have much effect on the flame thickness.关键词
甲烷/层流预混火焰/层流火焰燃烧速度/稀释Key words
methane/ laminar premixed flame/laminar burning velocity/dilution分类
能源科技引用本文复制引用
曹甄俊,朱彤..稀释气体对甲烷层流预混火焰燃烧速度的影响[J].同济大学学报（自然科学版）,2011,39(10):1557-1562,6.基金项目
国家自然科学基金(50206014) （50206014）
上海市教育委员会曙光计划(05SG23) （05SG23）
