期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 58, 期 23, 页码 10092-10105出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.9b01262
关键词
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资金
- National Natural Science Foundation of China [21878212, 91634105, 21776200, 21576186]
- Tianjin Natural Science Foundation [17JCQNJC05300]
Gas injection plays an important role in bubble formation in microfluidics. The effects of the gas feed on the formation of N-2 bubbles in a microfluidic T-junction is highlighted under constant-pressure injection and constant-volumetric-flow-rate injection for gas. The effects of gas feed on characteristic parameters for bubble formation are studied, such as length l(B), velocity u(g), and frequency f of bubbles. The results indicate that the characteristic parameters increase with inlet gas-liquid flow rate ratio or pressure ratio. However, the parameters are more sensitive to the variation of inlet pressure ratio. The difference lies in the feedback effect of two-phase flow in downstream microchannels, which can be included in the relationship between the inlet pressure ratio and flow rate ratio. Finally, guidance for selecting gas feed method for gas-liquid two-phase flow in a microchannel is presented.
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