CAJ | 학술논문

采用详细碳烟气相模型和颗粒相模型，在富燃料预混火焰中对碳烟的生成特性进行了数值研究，计算结果与实验对比表明，详细模型及碳烟计算方法在一定程度上能够描述碳烟演变过程。进而对比研究了异辛烷、正庚烷、甲苯、二异丁烯、乙醇等5种汽油代表性组分的碳烟生成特性，研究结果显示，芳烃类燃料易生成碳烟，而乙醇不易生成碳烟，烯烃比烷烃燃料易生成碳烟。并通过动力学分析了不同燃料生成碳烟的途径，解释了计算得到的定性结论。
채용상세탄연기상모형화과립상모형，재부연료예혼화염중대탄연적생성특성진행료수치연구，계산결과여실험대비표명，상세모형급탄연계산방법재일정정도상능구묘술탄연연변과정。진이대비연구료이신완、정경완、갑분、이이정희、을순등5충기유대표성조분적탄연생성특성，연구결과현시，방경류연료역생성탄연，이을순불역생성탄연，희경비완경연료역생성탄연。병통과동역학분석료불동연료생성탄연적도경，해석료계산득도적정성결론。
With detailed gas phase kinetic model and particle phase model of soot,this paper studied the characteris-tics of soot formation in fuel-rich premixed flame using numerical simulation. Comparisons between the calculated and experimental results show that the detail models and computational method of soot can,to some extent,describe the evolution of soot. Then the characteristics of soot formation for five representative species of gasoline(iso-octane,n-heptane,toluene,diisobutylene,and ethonal)were comparatively studied. The results show that aro-matic hydrocarbons can easily produce soot,while ethonal cannot. And alkene can produce soot more easily than alkane. Moreover,through kinetic analysis,the path ways of soot formation for five species were given,which can interpret the qualitative conclusions obtained from calculations.