Back to Search
Start Over
Investigation of mass transfer intensification under power ultrasound irradiation using 3D computational simulation: A comparative analysis
- Source :
- Ultrasonics Sonochemistry. 34:504-518
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- This paper aims at investigating the influence of acoustic streaming induced by low-frequency (24 kHz) ultrasound irradiation on mass transfer in a two-phase system. The main objective is to discuss the possible mass transfer improvements under ultrasound irradiation. Three analyses were conducted: i) experimental analysis of mass transfer under ultrasound irradiation; ii) comparative analysis between the results of the ultrasound assisted mass transfer with that obtained from mechanically stirring; and iii) computational analysis of the systems using 3D CFD simulation. In the experimental part, the interactive effects of liquid rheological properties, ultrasound power and superficial gas velocity on mass transfer were investigated in two different sonicators. The results were then compared with that of mechanical stirring. In the computational part, the results were illustrated as a function of acoustic streaming behaviour, fluid flow pattern, gas/liquid volume fraction and turbulence in the two-phase system and finally the mass transfer coefficient was specified. It was found that additional turbulence created by ultrasound played the most important role on intensifying the mass transfer phenomena compared to that in stirred vessel. Furthermore, long residence time which depends on geometrical parameters is another key for mass transfer. The results obtained in the present study would help researchers understand the role of ultrasound as an energy source and acoustic streaming as one of the most important of ultrasound waves on intensifying gas-liquid mass transfer in a two-phase system and can be a breakthrough in the design procedure as no similar studies were found in the existing literature.
- Subjects :
- Mass transfer coefficient
Acoustics and Ultrasonics
Chemistry
business.industry
Turbulence
Organic Chemistry
Ultrasound
Analytical chemistry
02 engineering and technology
Mechanics
010402 general chemistry
021001 nanoscience & nanotechnology
Residence time (fluid dynamics)
01 natural sciences
0104 chemical sciences
Inorganic Chemistry
Acoustic streaming
Mass transfer
Fluid dynamics
Chemical Engineering (miscellaneous)
Environmental Chemistry
Radiology, Nuclear Medicine and imaging
0210 nano-technology
Energy source
business
Subjects
Details
- ISSN :
- 13504177
- Volume :
- 34
- Database :
- OpenAIRE
- Journal :
- Ultrasonics Sonochemistry
- Accession number :
- edsair.doi.dedup.....5545ef8795b4aeef3b9d48c78fee9c79