摘要
本文采用滞止火焰微孔探针取样,结合差分电迁移率筛分仪和离心式质量筛分仪,研究了不同滞止板取样高度和当量比对预混乙烯火焰碳质颗粒的质量和有效密度的影响。结果表明质量随电迁移率直接成指数变化,滞止板取样高度对质量电迁移率指数ε影响不大,当量比对碳质颗粒有效密度的影响比较显著。
The system consists of neutralizer,centrifugal particle mass analyser(CPMA),Long differential mobility analyser(Long-DMA) and ultrafine condensation particle counter(UCPC) are used to research mass-mobility relationship and effective density of soot in ethylene-oxygen-argon flame with different stagnation flame height above burner surface(Hp =1.2 cm,1.6 cm,2.0 cm) and different equivalence ratio(φ = 2.0,2.3).The results imply that sampling height above burner has a slight effection on mass-mobility exponent which is in the range of 2.37-2.50.Simultaneously,different equivalence ratio has a significant impact on effective density of soot.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2017年第4期900-905,共6页
Journal of Engineering Thermophysics
基金
国家自然科学基金项目(No.91541122)
国家重点基础研究发展计划(973)项目(No.2013CB228500)