【作者】 于艺红； 沙勇； 成弘； 余国琮；

【Author】 Yu Yihong, Sha Yong, Cheng Hong, Yu Guocong (Chemical Engineering Research Center, Tianjin University, Tianjin, 300072)

【机构】 天津大学化工研究所；

【摘要】 利用激光纹影仪对静止、水平流动以及降膜流动的乙醇水溶液双组分扩散过程中传质导致的界面对流结构进行了观察,同时考察了温度、液层厚度、流体运动状态等因素对界面对流结构的影响。研究结果有助于寻求增进传质的有效途径,并且为传质界面湍动现象的理论分析提供实验依据。更多还原

【Abstract】 Using Laser Schlieren device, the interfacial convective structures caused by gas - liquid mass transfer in the interface during the diffusion process of ethanol aqueous solution were observed under different liquid states of quiescence, horizontal flow and falling film. The effects of the temperature, the depth of liquid layer and the state of motion on interfacial structure were reported. The result is helpful not only on finding efficient approach to accelerate the mass transfer but also providing experimental basis for the theoretical analysis of the interfacial turbulence phenomena.更多还原