Three-dimensional visualization of molten silicon convection

Masahito Watanabe, Minoru Eguchi, Koichi Kakimoto, Taketoshi Hibiya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Molten silicon convection during single crystal growth by the Czochralski method was visualized three-dimensionally by the individually developed double-beam X-ray radiography system with solid tracer method. The purpose of the present paper is to clarify the three-dimensional structure of torus-like flow pattern of molten silicon which has low Prandtl number. The root-mean-square velocity for one specific tracer was 21 mm/sec. The most impressive result was as follows; a flow field with larger azimuthal velocity than the rotational velocity of the crucible exists just beneath the crystal, while the flow field with smaller or negative azimuthal velocity exists near the crucible wall. This azimuthal flow modulation can be explained by the Coriolis force.

Original languageEnglish
Title of host publicationExperimental and Numerical Flow Visualization
PublisherPubl by ASME
Pages255-260
Number of pages6
Volume128
ISBN (Print)0791808742
Publication statusPublished - 1991
Externally publishedYes
EventWinter Annual Meeting of the American Society of Mechanical Engineers - Atlanta, GA, USA
Duration: Dec 1 1991Dec 6 1991

Other

OtherWinter Annual Meeting of the American Society of Mechanical Engineers
CityAtlanta, GA, USA
Period12/1/9112/6/91

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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