CAJ | 학술논문

针对液体燃料层流燃烧的实验测量需要，设计一个边界条件可控的、稳定的液体燃料层流部分预混燃烧器。选取正庚烷与甲苯混合后的液体燃料作为验证火焰的实验燃料。火焰直接成像、双色法测温、激光诊断测量结果均与类似的部分预混火焰测量结果相近，表明了所设计燃烧器火焰的可靠性。激光诊断的研究结果清晰地表明了火焰在不同高度下碳烟及其前驱物多环芳香烃(PAHs)的生成氧化历程，为验证和发展液体燃料浓预混条件下的碳烟生成氧化机理提供数据支撑。
침대액체연료층류연소적실험측량수요，설계일개변계조건가공적、은정적액체연료층류부분예혼연소기。선취정경완여갑분혼합후적액체연료작위험증화염적실험연료。화염직접성상、쌍색법측온、격광진단측량결과균여유사적부분예혼화염측량결과상근，표명료소설계연소기화염적가고성。격광진단적연구결과청석지표명료화염재불동고도하탄연급기전구물다배방향경(PAHs)적생성양화역정，위험증화발전액체연료농예혼조건하적탄연생성양화궤리제공수거지탱。
Aiming at the measurement requirement of liquid fuel layer combustion,a boundary controllable,flame steady,partially premixed burner was designed in this paper. The mixture of n-heptane and toluene was chosen as the test fuel. The flame structures,temperature measurement,laser diagnostics results were all close to those of similar partially premixed flames,which showed that the designed burner,the co-flow partially-premixed flame and the diagnostic methods were reliable. The results of laser diagnostics revealed the formation and oxidation processes of soot and PAHs under different flame heights,and the measured data provided the good support to verify and develop the soot formation and oxidation mechanism under fuel rich conditions.