摘要
通过对3个非预混火焰的详细数值模拟,获得了一个全新的温度和折射率之间的状态关系.利用该状态关系能直接从折射率计算温度,而不需要当地组分信息.利用全息干涉实验和数值模拟结果,对4个不同高度的横断面的温度计算表明,这个状态关系将空气组分假设带来的误差从48.8%降低到4%以下.分析表明,该状态关系具有应用于化学当量比较大的预混合部分预混火焰的潜力.
Through a detailed numerical simulation of three diffusion flames, a new state relationship was developed, from which the temperature can be computed directly from refractive index without local composition concentrations. Temperatyres were computed from measured refractive index with this state relationship or the composition concentrations of simulation at four cross sections. The result indicates that this state relationship can reduce the error produced by assuming the composition of air from 48.8 % to below 4%. This relationship has the potential to be applicable to partially premixed flames（PPFs） and premixed flames with large fuel-equivalence ratio.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2007年第4期325-329,共5页
Journal of Combustion Science and Technology
关键词
全息干涉
非预混火焰
状态关系
折射率
holographic interferometry
non-premixed flame
state relationship
refractive index
