학술논문

Experimental investigation of micro droplet formation mechanism at T-shaped junction / マイクロT字ジャンクションにおける液滴生成機構の実験的考察
Document Type
Journal Article
Source
The Proceedings of the Fluids engineering conference. 2019, :OS2-24
Subject
Droplet
Force balance
Interfacial tension
Micro-PIV
Microchannel
Language
Japanese
ISSN
2424-2896
Abstract
The T-junction is the most common channel shape used for microdroplet generation. To control the droplet size, it is necessary to acquire the time series of each force acting between two fluids. The purpose of this study is to investigate the mechanism of microdroplet formation in micro T-junction using confocal micro PIV (Particle Image Velocimetry). As a result of the measurement, it was confirmed that when the resultant force of the upstream pressure of continuous phase and the shear force acting on the interface exceeded the interfacial tension against the deformation of the interface, it shifted to the Necking stage where the interface spontaneously splits.

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