Dual-path Schlieren technique on interfacial turbulence phenomena in gas-liquid mass transfer

CHEN Jie; ZENG Aiwu; YUAN Xigang

doi:10.3969/j.issn.0438-1157.2012.10.005

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Dual-path Schlieren technique on interfacial turbulence phenomena in gas-liquid mass transfer

更新时间：2025-12-10

- Dual-path Schlieren technique on interfacial turbulence phenomena in gas-liquid mass transfer
- CIESC Journal Issue 10, Pages: 3040-3044(2012)
- 作者机构：
  
  天津大学化工学院, 化学工程联合国家重点实验室,天津,300072
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.10.005
  CLC： Q028
- Online First：05 October 2012，
  
  Published：05 October 2012
- 稿件说明：
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CHEN Jie, ZENG Aiwu, YUAN Xigang. Dual-path Schlieren technique on interfacial turbulence phenomena in gas-liquid mass transfer[J]. CIESC Journal, 2012, (10): 3040-3044.
DOI：

CHEN Jie, ZENG Aiwu, YUAN Xigang. Dual-path Schlieren technique on interfacial turbulence phenomena in gas-liquid mass transfer[J]. CIESC Journal, 2012, (10): 3040-3044. DOI： 10.3969/j.issn.0438-1157.2012.10.005.

摘要

建立了双光路纹影仪实验系统

并利用双光路纹影仪

同时从垂直和平行于界面两个方向对氯苯吸收、解吸CO2的传质对流结构进行了观察

发现在氯苯吸收CO2时

没有明显的对流结构

只是在垂直界面的纹影图像中观察到逐渐变粗的暗条纹。在氯苯解吸CO2时

在垂直和平行于界面两个方向都观察到了明显的对流结构

在垂直界面的纹影图像中开始时出现分层现象

随着解吸的进行

对流加剧

分层现象被破坏;平行界面方向的对流结构发展较快

优先在平行界面的纹影图像中观察到明显的对流结构。由于传质的热效应

两个方向的对流结构都有向中心运动的趋势。实验表明

双光路纹影仪实验系统能观察界面传质对流过程的三维变化

可深化对界面传质对流过程的认识。

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.

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