差分干涉法测量微重力环境蜡烛火焰的温度  

Candle Flame Temperature Measurement in Microgravity by Differential Interferometry

作　　者：杜文锋[1] 张孝谦[1] 韦明罡[1] 孔文俊[1] 华泳 

机构地区：[1]中国科学院工程热物理研究所,北京100080 [2]泛能实验室,北京100080

出　　处：《燃烧科学与技术》2000年第2期129-132,共4页Journal of Combustion Science and Technology

基　　金：国家 92 1 - 2微重力燃烧基金资助项目

摘　　要：从原理上介绍了用于测定微重力环境中蜡烛火焰温度分布的 Wollaston棱镜差分干涉仪 ,并给出了从差分干涉图计算轴对称蜡烛火焰温度分布的数学过程。测量与计算结果表明 ,微重力环境下的蜡烛火焰温度低于烟粒子的最小生成温度。由于自然对流消失 ,化学反应放热效率受到组分扩散速率的控制 ,辐射热损失的冷却作用相对增强 ,这是引起微重力环境中蜡烛火焰温度降低的主要原因。WT5”BZ]The differential interferometer developed for the candle flame temperature measurement in microgravity is introduced in principle.A calculation procedure for the interpretation of the differential interferogram into temperature distribution is presented.The results show that the candle flame temperature is below the soot formation threshold temperature in quiescent microgravity environment,and that it is reasonable to conclude that due to the absence of the gravity induced gas flow the chemical reaction rate is controlled by the diffusion rate of various species,and the importance of the radiative heat loss of the candle flame is enhanced,which results in the low candle flame temperature in quiescent microgravity.These conclusions partially justify the argument that the dimblue phenomenon of candle flame in microgravity results from the low candle flame temperature. [WT5”HZ]

关 键 词：微重力 差分干涉法 蜡烛火焰温度 

分 类 号：O643.21[理学—物理化学]