This research is focused on a numerical investigation of dynamic and thermal processes of single droplet in the uniform droplet spray (UDS) process. The level set method (LSM) is used to assist in tracking the liquid-gas and solid-liquid interfaces during droplet’s impingement and solidification. UDS process generates mono-size droplets of desired diameter, permits stringent control of the thermal state of the droplet, and produces deposits and materials with distinctly different microstructures including Icosahedral quasicrystalline phase (I-phase) in the Mg-Zn-Y system. The conservative level set function, combined with the Navier-Stokes and energy equations have been adopted to study the deformation and heat transfer of liquid metal droplet when impacting on the substrate under supercooling condition. The effects of surface tension and contact angle on droplet’s deformation are taken into consideration. The developed simulation technique is validated both analytically and experimentally. A rapid solidification model has been integrated with LSM to simulate the rapid solidification within the deformed Mg-Zn-Y droplet predicted in the former model. It is found that the initial temperature fields and latent heat releasing during solidification have significant impact on the solidification process.
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ASME 2008 International Mechanical Engineering Congress and Exposition
October 31–November 6, 2008
Boston, Massachusetts, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4871-5
PROCEEDINGS PAPER
Modeling of Droplet-Based Processing for the Production of High-Performance Particulate Materials Using Level Set Method Available to Purchase
Pengtao Wang,
Pengtao Wang
University of Massachusetts - Lowell, Lowell, MA
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Hongwei Sun,
Hongwei Sun
University of Massachusetts - Lowell, Lowell, MA
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Peter Y. Wong,
Peter Y. Wong
Tufts University, Medford, MA
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Hiroki Fukuda,
Hiroki Fukuda
Northeastern University, Boston, MA
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Teiichi Ando
Teiichi Ando
Northeastern University, Boston, MA
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Pengtao Wang
University of Massachusetts - Lowell, Lowell, MA
Hongwei Sun
University of Massachusetts - Lowell, Lowell, MA
Peter Y. Wong
Tufts University, Medford, MA
Hiroki Fukuda
Northeastern University, Boston, MA
Teiichi Ando
Northeastern University, Boston, MA
Paper No:
IMECE2008-68014, pp. 1745-1752; 8 pages
Published Online:
August 26, 2009
Citation
Wang, P, Sun, H, Wong, PY, Fukuda, H, & Ando, T. "Modeling of Droplet-Based Processing for the Production of High-Performance Particulate Materials Using Level Set Method." Proceedings of the ASME 2008 International Mechanical Engineering Congress and Exposition. Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C. Boston, Massachusetts, USA. October 31–November 6, 2008. pp. 1745-1752. ASME. https://doi.org/10.1115/IMECE2008-68014
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