CAJ | 학술논문

单液滴蒸发燃烧规律是研究喷雾蒸发与燃烧这一复杂物理化学过程的基础。与传统折算薄膜理论相比，从基本控制方程出发，建立了高温对流环境中单液滴的瞬态蒸发与燃烧模型。模型中详细考虑了液相内部环流、气相边界层流动以及热物性的变化，并采用数值模拟方法分析了来流温度对油滴蒸发燃烧特性的影响。计算结果复现了实验中液滴火焰由尾部火焰向包覆火焰的发展过程，验证了直径平方定律的适用范围，并得到了来流温度对油滴蒸发燃烧特性的影响规律。
단액적증발연소규률시연구분무증발여연소저일복잡물이화학과정적기출。여전통절산박막이론상비，종기본공제방정출발，건립료고온대류배경중단액적적순태증발여연소모형。모형중상세고필료액상내부배류、기상변계층류동이급열물성적변화，병채용수치모의방법분석료래류온도대유적증발연소특성적영향。계산결과복현료실험중액적화염유미부화염향포복화염적발전과정，험증료직경평방정률적괄용범위，병득도료래류온도대유적증발연소특성적영향규률。
Compared with the classical evaporation and combustion theory of single drop in convective environment,a new model was established in this paper based on the governing equations of two-dimensional two-phase flow,in which droplet internal circulation and the flow structure of its surroundings were considered. The tran-sient combustion process of single droplet and the effect of gas flow temperature on combustion characteristics were analyzed by numerical simulation. The results show that the evaporation and combustion law of single droplet is basi-cally in line with diameter square law in most of its lifetime. The gas flow temperature has great influence on the proc-ess of droplet evaporation,the transient process of flame and the combustion characteristics.