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Remelting and Coalescence of Molten Metal Droplets Deposited on a Plate

[+] Author Affiliations
M. Fang, S. Chandra, C. B. Park

University of Toronto, Toronto, ON, Canada

Paper No. HT-FED2004-56321, pp. 939-944; 6 pages
  • ASME 2004 Heat Transfer/Fluids Engineering Summer Conference
  • Volume 3
  • Charlotte, North Carolina, USA, July 11–15, 2004
  • Conference Sponsors: Heat Transfer Division and Fluids Engineering Division
  • ISBN: 0-7918-4692-X | eISBN: 0-7918-3740-8
  • Copyright © 2004 by ASME


An experimental study was conducted to study coalescence of molten tin droplet deposited on an aluminum plate that was moving horizontally. A pneumatic droplet generator was used to produce molten tin droplets on demand. Coalescence of droplets placed on a horizontally moving surface depended on both substrate temperature and the degree of overlap between droplets. Continuous beads could be produced if the substrate temperature was kept above 175°C and droplets overlapped by a distance equal to half their diameter. If either substrate temperature or droplet overlap distance was too small surface tension driven instabilities forced the bead to break up. A simple mass conservation model was used to predict the width of beads formed by droplet coalescence.

Copyright © 2004 by ASME



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