Journal
ULTRASONICS SONOCHEMISTRY
Volume 75, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2021.105611
Keywords
Acoustic resonance; Microreactors; Gas-liquid Taylor flow; Atomization; Gas-liquid mass transfer
Categories
Funding
- European Research Council (ERC) under the European Union's Horizon 2020 research andinnovation programme [101001024]
- Chemistry and Chemical Engineering Guangdong Laboratory [2011009]
- European Union's Horizon 2020 research and innovation programme under the Marie Skodowska-Curie grant [721290]
- European Research Council (ERC) [101001024] Funding Source: European Research Council (ERC)
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Through experimental analysis and numerical simulation, the principles of acoustic resonance within a liquid slug were investigated, and a mechanism of atomization in confined channels was proposed based on high-speed image analysis. The observed phenomenon provides a novel source of confined micro sprays and may overcome mass transfer limitations for gas-liquid processes in flow.
It is shown that a liquid slug in gas-liquid segmented flow in microchannels can act as an acoustic resonator to disperse large amounts of small liquid droplets, commonly referred to as atomization, into the gas phase. We investigate the principles of acoustic resonance within a liquid slug through experimental analysis and numerical simulation. A mechanism of atomization in the confined channels and a hypothesis based on high-speed image analysis that links acoustic resonance within a liquid slug with the observed atomization is proposed. The observed phenomenon provides a novel source of confined micro sprays and could be an avenue, amongst others, to overcome mass transfer limitations for gas-liquid processes in flow.
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