化工学报2012，Vol.63Issue(10)：3040-3044,5.DOI:10.3969/j.issn.0438-1157.2012.10.005
双光路纹影仪观察气液传质界面湍动现象
Dual-path Schlieren technique on interfacial turbulence phenomena in gas-liquid mass transfer
摘要
Abstract
The Schlieren technique with double optical path was established. With the new technique, the natural convection of CO2 absorption into and desorption from chlorobenzene in a quiescent cell was visualized from horizontal and vertical directions simultaneously. During the absorption process, the convection does not appear, and only dark stripes appear from the vertical direction. In the desorption process, evident convection emerges in both horizontal and vertical directions. At the beginning of the desorption process, the stratification appears in the vertical direction, and it is destroyed with the convection becoming more and more intense. The characteristic velocity of the horizontal convection is larger than that of normal one, then the convection appears in the horizontal direction. The convection structure tends to move to the center of the cell because of the heat effect from the mass transfer. The results show that the dual-path Schlieren technique can be used to observe tridimensional convections easily and simultaneously, based on which the mass transfer can be studied more deeply.关键词
双光路纹影系统/界面湍动/质量传递/Marangoni对流/Rayleigh-Bénard对流Key words
dual-path Schlieren system/ interfacial turbulence/ mass transfer/ Marangoni convection/ Rayleigh-Benard convection分类
化学化工引用本文复制引用
陈杰,曾爱武,袁希钢..双光路纹影仪观察气液传质界面湍动现象[J].化工学报,2012,63(10):3040-3044,5.基金项目
国家科技支撑计划项目(2007BAB24B05). （2007BAB24B05）
