Effects of rotating magnetic fields on thermocapillary flow: Comparison of the infinite and the Φ12 models

Liping Yao, Zhong Zeng, Hiroshi Mizuseki, Yoshiyuki Kawazoe

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Convection control of three-dimensional thermocapillary flow by a rotating magnetic field (RMF) was simulated numerically, and the RMF infinite and RMF Φ12 models were compared. The results of using both RMF models demonstrate that the transverse RMF stirs convection in an azimuthal direction and suppresses convection in the axial direction, which is helpful for the three-dimensional melt convection to become axisymmetric. Compared to the RMF Φ12 model, however, the over-simplified RMF infinite model leads to a relatively large deviation. With the same magnetic field (7 mT, 50 Hz), the RMF infinite model results in a larger azimuthal velocity and a smaller axial velocity.

Original languageEnglish
Pages (from-to)2413-2418
Number of pages6
JournalInternational Journal of Thermal Sciences
Volume49
Issue number12
DOIs
Publication statusPublished - 2010 Dec 1

Keywords

  • Convection control
  • Floating zone
  • Microgravity
  • Rotating magnetic field
  • Thermocapillary flow
  • Φ-Φ model

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)

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