单个运动气泡近界面浓度场的研究  

STUDY OF NEAR-INTERFACIAL CONCENTRATION FIELD OF SINGLE MOVING BUBBLE

作　　者：马友光[1] 汪晓红[2] 余国琮[1] 郭广平[2] 

机构地区：[1]天津大学化学工程研究所,天津300072 [2]北京航空材料研究院

出　　处：《化工学报》1998年第6期715-720,共6页CIESC Journal

基　　金：国家自然科学基金!No.29676029;化学工程重点实验室开放课题

摘　　要：对单个气泡传质的近界面浓度场影响因素进行了实验和理论研究．实时激光全息干涉法测量结果表明，运动气泡近界面浓度是一个定态值，受流速、泡径、温度等因素影响显著；假设该传质过程达到局部平衡，进行热力学分析，得到的结论与实验结果一致．在实验测量结果的基础上，对单个O_2气泡在乙醇中吸收时的传质近界面浓度场进行了数值模拟，取得了良好的结果．In order to afford an insight into the problem of bubble mass transfer,this paper experimentally and theoretically deals with the effective factors of near-interfacial mass transfer of a single bubble.The micro real-time holographic interference results showed that near-interfacial concentration is a stable value of dynamic mass transfer.It was affected by relative velocity,bubble dianmeter,temperature,pressure,etc.The thermodynamic analysis of the bubble mass transfer got the same result as experiment.Nunerical simulation of the near-interfacial concentration field of a single CO_2 bubble absorbed in alcohol was made.

关 键 词：热力学分析 近界面浓度场 单个气泡传质 传质 

分 类 号：TQ021.4[化学工程]