Revisiting heat transfer analysis for rapid solidification of metal droplets

Keh Chin Chang, Chih Ming Chen

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

There are two major mechanisms controlling the rapid solidification processing (RSP) of metal droplets in spray forming. One is the external extraction of heat which is usually carried out through convective and/or radiatively heat transfer modes. The other is the internal heat conduction combined with the nucleation-controlled solidification kinetics. Heat transfer analysis for the RSP of a metal droplet is revisited through the two modelings with and without consideration of internal heat conduction. Two test problems with cooling rates of metal droplets of 107 and 103 K/s are studied. Results through comparing the two predictions, obtained separately by the two investigated models, lead to the conclusion that the heat transfer modeling has to consider internal heat conduction in the RSP of metal droplets even with small Biot numbers. Other factors which affect the prediction accuracy in the work are discussed.

Original languageEnglish
Pages (from-to)1573-1583
Number of pages11
JournalInternational Journal of Heat and Mass Transfer
Volume44
Issue number8
DOIs
Publication statusPublished - 2001 Apr

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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