Modeling of Droplet-Based Processing for the Production of High-Performance Particulate Materials using the Level Set Method |
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| Authors: | Pengtao Wang Peter Y. Wong Hiroki Fukuda Teiichi Ando |
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| Affiliation: | 1. Department of Mechanical Engineering , University of Massachusetts at Lowell , Lowell , Massachusetts , USA;2. Department of Mechanical Engineering , Tufts University , Medford , Massachusetts , USA;3. Department of Mechanical and Industrial Engineering , Northeastern University , Boston , Massachusetts , USA |
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| Abstract: | The dynamic and thermal processes of an Mg-Zn-Y alloy droplet's spreading and solidification are investigated using the level set method in order to understand their effects on the phase change process in a uniform droplet spray process. The level set method, driven with the solidification velocity predicted by a free dendritic growth model, is capable of tracking the evolution of the solidification front within the deformed droplet. It is found that the solidification process heavily depends on the initial thermal state of the droplet, the latent heat released during solidification, and the heat loss to the substrate. A rapid solidification occurs in the initial microseconds before a slow solidification process takes place. |
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