| 气泡周围流场的PIV测定和浓度场研究 |
| |
| 引用本文： | 朱春英,马友光,高习群.气泡周围流场的PIV测定和浓度场研究[J].高校化学工程学报,2009,23(3). |
| |
| 作者姓名： | 朱春英 马友光 高习群 |
| |
| 作者单位： | 1. 天津大学,化工学院,化学工程联合国家重点实验室,天津,300072
2. 辽阳石油化纤公司亿方工业公司,辽宁,辽阳,111003 |
| |
| 摘 要： | 针对单乙醇胺水溶液吸收二氧化碳过程,采用粒子成像测速仪(PIV)对气泡周围的流场进行了测定,流场围绕气泡的对称轴呈对称分布.对速度场实验数据进行拟合,得到了泡顶对称轴上径向速度的分布方程.另外,采用实时激光全息干涉系统对不同液体流速下单乙醇胺吸收二氧化碳的传质过程进行了研究,通过CCD摄像机采集并记录下不同时刻的全息干涉条纹图.由干涉条纹图和浓度-折射率标准曲线,计算出传质达到稳态时气泡周围液相侧近界面浓度分布,近界面浓度及浓度边界层厚度.浓度分布呈指数衰减趋势,且浓度边界层厚度远远小于速度边界层厚度;随着液体流速的增加,气泡周围液相侧浓度边界层厚度和近界面浓度均减小.结合速度分布方程和对流扩散方程,推导出单乙醇胺水溶液吸收二氧化碳过程液相侧浓度分布模型.
|
| 关 键 词： | 速度场 浓度场 激光全息干涉 气泡 |
PIV Measurement of Flow Field and Study of Concentration Field around Bubble |
| |
| ZHU Chun-ying,MA You-guang,GAO Xi-qun.PIV Measurement of Flow Field and Study of Concentration Field around Bubble[J].Journal of Chemical Engineering of Chinese Universities,2009,23(3). |
| |
| Authors: | ZHU Chun-ying MA You-guang GAO Xi-qun |
| |
| Affiliation: | 1. School of Chemical Engineering and Technology;State Key Laboratory of Chemical Engineering;Tianjin University;Tianjin 300072;China;2. Yifang Industry Corporation;Liaoyang Petrochemical Fiber Company;Liaoyang 111003;China |
| |
| Abstract: | The process of absorption of CO2 by monoethanolamine aqueous solution was studied under various liquid velocities. The flow field around bubble was measured by using particle image velocimetry (PIV), it shows that the velocity field distributes symmetrically around the symmetrical axis of the bubble. Then the experimental data of the measured velocity field were fitted, and the equation of radial velocity distribution on the symmetrical axis of the frontal part of the bubble was obtained. In addition, the m... |
| |
| Keywords: | PIV |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
