PIV Measurement for Rayleigh Convection and Its Effect on Mass Transfer

Wei Chen; Shuyong Chen; Xigang Yuan; Huishu Zhang; Botan Liu; Kuotsung Yu

doi:10.1016/j.cjche.2014.06.022

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PIV Measurement for Rayleigh Convection and Its Effect on Mass Transfer

流体力学与传递现象 | Updated：2026-01-06

- PIV Measurement for Rayleigh Convection and Its Effect on Mass Transfer
- PIV Measurement for Rayleigh Convection and Its Effect on Mass Transfer
- 中国化学工程学报（英文版） 2014年22卷第10期页码：1078-1086
- Affiliations：
  
  State Key Laboratory of Chemical Engineering and School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2014.06.022
  中图分类号：
- 纸质出版：2014
- Accepted：
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Wei Chen, Shuyong Chen, Xigang Yuan, 等. PIV Measurement for Rayleigh Convection and Its Effect on Mass Transfer[J]. 中国化学工程学报（英文版）, 2014,22(10):1078-1086.

Wei Chen, Shuyong Chen, Xigang Yuan, Huishu Zhang, Botan Liu, Kuotsung Yu. PIV Measurement for Rayleigh Convection and Its Effect on Mass Transfer[J]. , 2014, 22(10): 1078-1086.
Wei Chen, Shuyong Chen, Xigang Yuan, 等. PIV Measurement for Rayleigh Convection and Its Effect on Mass Transfer[J]. 中国化学工程学报（英文版）, 2014,22(10):1078-1086. DOI： 10.1016/j.cjche.2014.06.022.

Wei Chen, Shuyong Chen, Xigang Yuan, Huishu Zhang, Botan Liu, Kuotsung Yu. PIV Measurement for Rayleigh Convection and Its Effect on Mass Transfer[J]. , 2014, 22(10): 1078-1086. DOI： 10.1016/j.cjche.2014.06.022.

摘要

Abstract

The velocity distribution in Rayleigh convection caused by acetone volatilization in acetone-ethyl acetate binary system was observed in a vertical cross section of an initially quiescent liquid layer by utilizing particle image velocimetry. Obvious turbulent vortexes that were induced by Rayleigh convection appeared in the bulk liquid

and its statistic features indicated that Rayleigh convection became more intensewith the increase of Ra number and ReG number. Mass transfer coefficient was measured and the computed enhancement factor indicated that Rayleigh convection could promote the surface renewal of the liquid phase and intensify the interfacial mass transfer significantly. A method was proposed for the prediction of mass transfer coefficient based on the measured velocity vector

and the predicted mass transfer coefficients are in reasonable agreement with the experimental results.

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