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

Fingerprint

Molten materials
Visualization
Silicon
Crucibles
Flow fields
X ray radiography
Coriolis force
Crystal growth from melt
Prandtl number
Crystal growth
Flow patterns
Modulation
Single crystals
Crystals
Convection

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Watanabe, M., Eguchi, M., Kakimoto, K., & Hibiya, T. (1991). Three-dimensional visualization of molten silicon convection. In Experimental and Numerical Flow Visualization (Vol. 128, pp. 255-260). Publ by ASME.

Three-dimensional visualization of molten silicon convection. / Watanabe, Masahito; Eguchi, Minoru; Kakimoto, Koichi; Hibiya, Taketoshi.

Experimental and Numerical Flow Visualization. Vol. 128 Publ by ASME, 1991. p. 255-260.

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

Watanabe, M, Eguchi, M, Kakimoto, K & Hibiya, T 1991, Three-dimensional visualization of molten silicon convection. in Experimental and Numerical Flow Visualization. vol. 128, Publ by ASME, pp. 255-260, Winter Annual Meeting of the American Society of Mechanical Engineers, Atlanta, GA, USA, 12/1/91.
Watanabe M, Eguchi M, Kakimoto K, Hibiya T. Three-dimensional visualization of molten silicon convection. In Experimental and Numerical Flow Visualization. Vol. 128. Publ by ASME. 1991. p. 255-260
Watanabe, Masahito ; Eguchi, Minoru ; Kakimoto, Koichi ; Hibiya, Taketoshi. / Three-dimensional visualization of molten silicon convection. Experimental and Numerical Flow Visualization. Vol. 128 Publ by ASME, 1991. pp. 255-260
@inproceedings{3740a7b5d4fc41c5a575ae26e13ce65d,
title = "Three-dimensional visualization of molten silicon convection",
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.",
author = "Masahito Watanabe and Minoru Eguchi and Koichi Kakimoto and Taketoshi Hibiya",
year = "1991",
language = "English",
isbn = "0791808742",
volume = "128",
pages = "255--260",
booktitle = "Experimental and Numerical Flow Visualization",
publisher = "Publ by ASME",

}

TY - GEN

T1 - Three-dimensional visualization of molten silicon convection

AU - Watanabe, Masahito

AU - Eguchi, Minoru

AU - Kakimoto, Koichi

AU - Hibiya, Taketoshi

PY - 1991

Y1 - 1991

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0026381524&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026381524&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0026381524

SN - 0791808742

VL - 128

SP - 255

EP - 260

BT - Experimental and Numerical Flow Visualization

PB - Publ by ASME

ER -