Journal
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
Volume 48, Issue 8, Pages 1494-1500Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2008.12.011
Keywords
UDS process; Shielding effect; Recalescence; In-flight solidification
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Funding
- Hitachi Metals, Ltd., Japan
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A mathematical model to describe the solidification of the droplets produced by the uniform-droplet spray process is developed. The model addresses the motion, heat transfer, nucleation and solidification of traveling droplets. A dimensionless formulation for the interface migration scheme during recalescence is developed. The simulation results of Sn-5wt.%Pb alloy droplets subjected to electrical charging are compared with those in uncharged cases. The effects of charging voltage on scattering and subsequent changes in droplet velocities and heat transfer coefficients are analyzed. The computations show substantial increases in heat transfer coefficient upon charging and notable decreases in droplet velocities and cooling rates. (C) 2008 Elsevier Masson SAS. All rights reserved.
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