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Towards a reference ultrasonic cavitation vessel. Part 1: preliminary investigation of the acoustic field distribution in a 25 kHz cylindrical cell.

Hodnett M, Choi MJ, Zeqiri B

Acoustics, Quality of Life Division, National Physical Laboratory, Hampton Road, Teddington, Middlesex TW11 0LW, United Kingdom. mark.hodnett@npl.co.uk

The acoustic field produced by a 25 kHz, 25 l cylindrical sonochemical processing cell has been characterised systematically using a sonar hydrophone, with the aim of establishing it as a reference test bed on which future investigations into acoustic cavitation activity may be based. Data acquired at sonication levels up to 500 W have shown that though significant cavitation activity is generated throughout the vessel, the acoustic field generated is reproducible, typically to +/- 12%. The increases in acoustic pressure are shown to be nonlinear with applied power, suggesting an intermediate optimum level for future study.

Published 29 August 2006 in Ultrason Sonochem, 14(1): 29-40.
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