Local Multiphase Flow Characterization withMicro Particle Image Velocimetry Using Refractive Index Matching

被引：11

作者：

Kollhoff, Robin T. ^{[1
]}

Kelemen, Katharina ^{[1
]}

Schuchmann, Heike P. ^{[1
]}

机构：

[1] Karlsruhe Inst Technol, Inst Proc Engn Life Sci, Sec Food Proc Engn 1, D-76131 Karlsruhe, Germany

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2015年 / 38卷 / 10期

关键词：

Emulsification; High-pressure homogenization; Micro particle image velocimetry; Multiphase flow; Refractive index matching; BREAK-UP; DROP DEFORMATION; VELOCITY; PIV; VISUALIZATION; SYSTEM;

D O I：

10.1002/ceat.201500318

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

An accurate flow characterization is crucial for the understanding and optimization of emulsification processes. A method is presented to determine velocity fields of droplet-containing phases flowing through an orifice by micro particle image velocimetry (mu PIV). In order to overcome optical inaccessibility of emulsions, a recipe of a transparent emulsion system was developed using refractive index matching. Velocity fields could successfully be determined for an emulsion containing 30vol% of droplets in a rectangular orifice channel with the narrowest gap being 200 mu m. Emulsion flow was compared to a pure continuous phase and the influence of the dispersed phase was analyzed for each individual step of mu PIV image processing. For the presented experimental conditions, one- and two-phase flows exhibited no difference in flow characteristics.

引用

页码：1774 / 1782

页数：9

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