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Modelling the effect of acoustic waves on nucleation

Haqshenas, SR; Ford, IJ; Saffari, N; (2016) Modelling the effect of acoustic waves on nucleation. The Journal of Chemical Physics , 145 (2) , Article 024315. 10.1063/1.4955202. Green open access

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Abstract

A phase transformation in a metastable phase can be affected when it is subjected to a high intensity ultrasound wave. In this study we determined the effect of oscillation in pressure and temperature on a phase transformation using the Gibbs droplet model in a generic format. The developed model is valid for both equilibrium and non-equilibrium clusters formed through a stationary or non-stationary process. We validated the underlying model by comparing the predicted kinetics of water droplet formation from the gas phase against experimental data in the absence of ultrasound. Our results demonstrated better agreement with experimental data in comparison with classical nucleation theory. Then, we determined the thermodynamics and kinetics of nucleation and the early stage of growth of clusters in an isothermal sonocrystallisation process. This new contribution shows that the effect of pressure on the kinetics of nucleation is cluster size-dependent in contrast to classical nucleation theory.

Type: Article
Title: Modelling the effect of acoustic waves on nucleation
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1063/1.4955202
Publisher version: http://dx.doi.org/10.1063/1.4955202
Language: English
Additional information: The following article appeared in The Journal of Chemical Physics [J. Chem. Phys. 145, 024315 (2016)] and may be found at http://dx.doi.org/10.1063/1.4955202. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1505884
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