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Numerical modelling of droplet break-up for gas atomisation

Zeoli, Nicola and Gu, Sai (2008) Numerical modelling of droplet break-up for gas atomisation Computational Materials Science, 38, (2), pp. 282-292. (doi:10.1016/j.commatsci.2006.02.012).

Record type: Article

Abstract

High-pressure gas atomisation (HPGA) technology has been widely employed as an effective method to produce fine spherical metal powders. The physics of gas atomisation is dominated by rapid momentum and heat transfer between the gas and melt phases, and further complicated by break-up and solidification. A numerical model is developed to simulate the critical droplet break-up during the atomisation. By integration of the droplet break-up model with the flow field generated high-pressure gas nozzle, this numerical model is able to provide quantitative assessment for atomisation process. To verify the model performance, the melt stream is initialized to large droplets varying from 1 to 5 mm diameters and injected into the gas flow field for further fragmentation and the break-updynamics are described in details according to the droplet input parameters.

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More information

Published date: December 2008
Keywords: gas atomisation, metal powder, break-up, melt, numerical model
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 49353
URI: http://eprints.soton.ac.uk/id/eprint/49353
ISSN: 0927-0256
PURE UUID: 8292003c-e220-4af4-8439-2aeaa431535a

Catalogue record

Date deposited: 01 Nov 2007
Last modified: 17 Jul 2017 14:56

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