Publication Date:
2013-12-04
Description:
The effect of high-frequency (1.7 MHz) ultrasound waves on the mixing rate in a new continuous tubular sonoreactor was investigated by CFD modeling. Modeling of piezoelectric transducer (PZT) vibrations was done based on the dynamic mesh model. Results indicate that the acoustic streams were in the direction of wave propagation and their maximum velocity near the PZT surface agreed well with experimental measurements. The micromixing efficiency of the sonoreactor was studied by adopting the Villermaux/Dushman reaction in the modeling. Comparison of the calculated relative segregation index from modeling results with experimental data revealed reasonable accordance. The competence of high-frequency ultrasound in micro-stream generation seems promising for future developments of new ultrasound equipment with higher efficiency. Velocity distribution and micromixing efficiency of 1.7-MHz piezoelectric transducers in a novel continuous tubular sonoreactor were investigated by means of computational fluid dynamics models.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
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