Effects of inlet arrangements on liquid-liquid flow patterns in cross-junction square microchannels
Qian, Jin Yuan LU
; Wu, Zan
LU
; Cao, Zhen
LU
and Sunden, Bengt
LU
(2017)
ASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017
10.
- Abstract
Due to the high surface area to volume ratios leading to intensified heat and mass transfer rates, microreactors have been subject of interest for some time. Liquid-liquid two-phase flow is a very common phenomenon in microchannels. During the scale-up using a numbering-up approach, rectangular and square microchannels are preferred to circular microchannels in terms of easier integration of the former with a less volume. Therefore, liquid-liquid two-phase flow in non-circular microchannels has been investigated recently. However, there are still gaps in the fundamental understanding of liquid-liquid two-phase flow, such as the effect of inlet junctions or arrangements on flow patterns in non-circular microchannels. The present work... (More)
Due to the high surface area to volume ratios leading to intensified heat and mass transfer rates, microreactors have been subject of interest for some time. Liquid-liquid two-phase flow is a very common phenomenon in microchannels. During the scale-up using a numbering-up approach, rectangular and square microchannels are preferred to circular microchannels in terms of easier integration of the former with a less volume. Therefore, liquid-liquid two-phase flow in non-circular microchannels has been investigated recently. However, there are still gaps in the fundamental understanding of liquid-liquid two-phase flow, such as the effect of inlet junctions or arrangements on flow patterns in non-circular microchannels. The present work aims to study the effect of inlet arrangements on liquid-liquid two-phase flow dynamics and flow patterns of square glass microchannels. In this paper, oil is used as the dispersed phase and de-ionized water is used as the continuous phase. The special inlet arrangement in the cross-junction is compared to these common inlet arrangements of T-junction and cross-junction square microchannels. The effect of the inlet continuous phase velocity on the slug length is studied. Then, the slug lengths with the same inlet velocities of the three inlets and equal velocities of the two phases are carried out, respectively. Meanwhile, typical liquid-liquid flow pattern transitions are achieved at specific conditions. Finally, a special phenomenon without the droplet flow pattern is introduced, due to introduction of the novel inlet arrangement.
(Less)
- author
- Qian, Jin Yuan
LU
; Wu, Zan
LU
; Cao, Zhen
LU
and Sunden, Bengt
LU
- organization
- publishing date
- 2017
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Micro- and Nano-Systems Engineering and Packaging
- volume
- 10
- article number
- IMECE2017-71251
- publisher
- American Society Of Mechanical Engineers (ASME)
- conference name
- ASME 2017 International Mechanical Engineering Congress and Exposition, IMECE 2017
- conference location
- Tampa, United States
- conference dates
- 2017-11-03 - 2017-11-09
- external identifiers
-
- scopus:85041038382
- ISBN
- 9780791858455
- DOI
- 10.1115/IMECE2017-71251
- language
- English
- LU publication?
- yes
- id
- 952f7325-e409-4e73-afb3-0cf030f602a5
- date added to LUP
- 2018-02-06 10:56:00
- date last changed
- 2022-02-15 00:50:03
@inproceedings{952f7325-e409-4e73-afb3-0cf030f602a5,
abstract = {{<p>Due to the high surface area to volume ratios leading to intensified heat and mass transfer rates, microreactors have been subject of interest for some time. Liquid-liquid two-phase flow is a very common phenomenon in microchannels. During the scale-up using a numbering-up approach, rectangular and square microchannels are preferred to circular microchannels in terms of easier integration of the former with a less volume. Therefore, liquid-liquid two-phase flow in non-circular microchannels has been investigated recently. However, there are still gaps in the fundamental understanding of liquid-liquid two-phase flow, such as the effect of inlet junctions or arrangements on flow patterns in non-circular microchannels. The present work aims to study the effect of inlet arrangements on liquid-liquid two-phase flow dynamics and flow patterns of square glass microchannels. In this paper, oil is used as the dispersed phase and de-ionized water is used as the continuous phase. The special inlet arrangement in the cross-junction is compared to these common inlet arrangements of T-junction and cross-junction square microchannels. The effect of the inlet continuous phase velocity on the slug length is studied. Then, the slug lengths with the same inlet velocities of the three inlets and equal velocities of the two phases are carried out, respectively. Meanwhile, typical liquid-liquid flow pattern transitions are achieved at specific conditions. Finally, a special phenomenon without the droplet flow pattern is introduced, due to introduction of the novel inlet arrangement.</p>}},
author = {{Qian, Jin Yuan and Wu, Zan and Cao, Zhen and Sunden, Bengt}},
booktitle = {{Micro- and Nano-Systems Engineering and Packaging}},
isbn = {{9780791858455}},
language = {{eng}},
publisher = {{American Society Of Mechanical Engineers (ASME)}},
title = {{Effects of inlet arrangements on liquid-liquid flow patterns in cross-junction square microchannels}},
url = {{http://dx.doi.org/10.1115/IMECE2017-71251}},
doi = {{10.1115/IMECE2017-71251}},
volume = {{10}},
year = {{2017}},
}