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Numerical Modelling of Sequential Droplet Impingements

Kamnis, S, Gu, S, Lu, TJ and Chen, C (2008) Numerical Modelling of Sequential Droplet Impingements Journal of Physics D: Applied Physics, 41 (16 (20). p. 165303.

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Abstract

During the process of thermal spray coating, molten powders are sprayed and deposited on substrates to generate protective coatings. It is essential to have a clear understanding of the physics of droplet impingement on the surface of substrates for better control of the generation of splats and the structure of coating. A numerical model is developed in this paper to simulate the dynamics of transient flow during the impingement process, including spreading, break-up, air entrapment and solidification. The computation is achieved using the technique of volume of fluid surface tracking within a fixed Eulerian structured mesh. The three-dimensional simulation is able to accurately give a demonstration of dynamic flow patterns such as the generation of fingers, satellite droplets and pores during impingement. The numerical model is validated with experimental data from the tin droplet measurement and excellent agreement is found between the simulation and the experiment.

Item Type: Article
Authors :
NameEmailORCID
Kamnis, SUNSPECIFIEDUNSPECIFIED
Gu, Ssai.gu@surrey.ac.ukUNSPECIFIED
Lu, TJUNSPECIFIEDUNSPECIFIED
Chen, CUNSPECIFIEDUNSPECIFIED
Date : 24 July 2008
Funders : UK DTI, UK DIUS, National 111 Project of China, National Natural Science Foundation of China, National Basic Research Program of China
Identification Number : https://doi.org/10.1088/0022-3727/41/16/165303
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:51
Last Modified : 17 May 2017 15:13
URI: http://epubs.surrey.ac.uk/id/eprint/840588

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