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Towards a reference cavitating vessel Part III: design and acoustic pressure characterization of a multi-frequency sonoreactor

journal contribution
posted on 2023-06-09, 09:32 authored by Lian Wang, Gianluca MemoliGianluca Memoli, Mark Hodnett, Ian Butterworth, Dan Sarno, Bajram Zeqiri
A multi-frequency cavitation vessel (RV-multi) has been commissioned at the National Physical Laboratory (NPL, UK), with the aim of establishing a standard source of acoustic cavitation in water, with reference to which details of the cavitation process can be studied and cavitation measurement techniques evaluated. The vessel is a cylindrical cavity with a maximum capacity up to 17?L, and is designed to work at six frequency ranges, from 21?kHz to 136?kHz, under controlled temperature conditions. This paper discusses the design of RV-multi and reports experiments carried out to establish the reproducibility of the acoustic pressure field established within the vessel and its operating envelope, including sensitivity to aspects such as water depth and temperature. The acoustic field distribution was determined along the radial and depth directions within the vessel using a miniature hydrophone, for two input voltage levels under low power transducer excitation conditions (e.g. below the cavitation threshold). Particular care was taken in determining peak acoustic pressure locations, as these are critical for accompanying cavitation studies. Perturbations of the vessel by the measuring hydrophone were also monitored with a bottom-mounted pressure sensor.

History

Publication status

  • Published

Journal

Metrologia

ISSN

0026-1394

Publisher

IOP Publishing

Issue

4

Volume

52

Page range

575

Department affiliated with

  • Informatics Publications

Research groups affiliated with

  • Creative Technology Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2018-01-02

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