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-up dynamics are described in details according to the droplet input parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 282-292 |
| Number of pages | 11 |
| Journal | Computational Materials Science |
| Volume | 38 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Dec 2006 |
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Keywords
- Break-up
- Gas atomisation
- Melt
- Metal powder
- Numerical model
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Numerical modelling of droplet break-up for gas atomisation. / Zeoli, N.; Gu, S.
In: Computational Materials Science, Vol. 38, No. 2, 01.12.2006, p. 282-292.Research output: Contribution to journal › Article
TY - JOUR
T1 - Numerical modelling of droplet break-up for gas atomisation
AU - Zeoli, N.
AU - Gu, S.
PY - 2006/12/1
Y1 - 2006/12/1
N2 - 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-up dynamics are described in details according to the droplet input parameters.
AB - 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-up dynamics are described in details according to the droplet input parameters.
KW - Break-up
KW - Gas atomisation
KW - Melt
KW - Metal powder
KW - Numerical model
UR - http://www.scopus.com/inward/record.url?scp=33750459933&partnerID=8YFLogxK
UR - https://www.sciencedirect.com/science/article/pii/S0927025606000504?via%3Dihub
U2 - 10.1016/j.commatsci.2006.02.012
DO - 10.1016/j.commatsci.2006.02.012
M3 - Article
AN - SCOPUS:33750459933
VL - 38
SP - 282
EP - 292
JO - Computational Materials Science
JF - Computational Materials Science
SN - 0927-0256
IS - 2
ER -