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Volume 4
Nano Research & Applications
ISSN: 2471-9838
Page 87
JOINT EVENT
August 16-18, 2018 | Dublin, Ireland
&
12
th
Edition of International Conference on
Nanopharmaceutics and Advanced Drug Delivery
25
th
Nano Congress for
Future Advancements
Nano Congress 2018
&
Nano Drug Delivery 2018
August 16-18, 2018
Numerical modelling on nano structured coating in suspension plasma spray
Lijuan Qian
1
and
Jianzhong Lin
2
1
China Jiliang University, China
2
Zhejiang University, China
S
uspension plasma spray is a promising technique for nano-structured coatings and nano-powder synthesis where nano-
particles are injected into the plasma jet with the help of liquid precursors. When the particles fly through the plasma flame,
their mass, momentum and energy will dramatically change due to the interaction with the flame. A comprehensive model was
developed to investigate the suspension spraying in the radio frequency inductively coupled plasma torch. The model is based
on hybrid Eulerian/Lagrangian coordinate system to illustrate the suspension behavior, such as suspension droplets collision,
heating and evaporation; nano or agglomerate particles heating, melting and evaporation. Special considerations are directed
to the suspension droplets collision, non-continuum effects and the influence of evaporation on heat transfer. After validation
with experimental data, the comprehensive particle model is used to predict the trajectory, velocity, temperature and size of the
in-flight nano- or agglomerate particles. A parametric analysis has been performed to find the way of controlling the operating
conditions for desirable final particle status. The parameters that have a significant influence on the spray process are identified.
The relationship between the predicted height of droplet complete evaporation and the droplet initial diameter is deduced.
Finally, results also calculate the critical size of an ethanol droplet suspended with zirconia particles, which will be completely
vaporized under present conditions.
qianlijuan1982@126.comNano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C3-015