Temperature fluctuations of the Marangoni flow in a liquid bridge of molten silicon under microgravity on board the TR-IA-4 rocket

Shin Nakamura, Taketoshi Hibiya, Koichi Kakimoto, Nobuyuki Imaishi, Shinichi Nishizawa, Akira Hirata, Kusuhiro Mukai, Shin Ichi Yoda, Tomoji S. Morita

研究成果: ジャーナルへの寄稿記事

69 引用 (Scopus)

抄録

Temperature fluctuation measurements in a liquid bridge of molten silicon, which shows the Marangoni flow in highly super-critical condition, are performed in a half-zone configuration under microgravity on board a TR-IA-4 rocket and on the ground. In the microgravity experiment, two types of temperature oscillation are observed during the melting process of silicon and in the cylindrical half-zone melt. The former oscillation, which has a frequency of about 0.1 Hz during the melting process, has an antiphase correlation of temperature oscillation measured in thermocouples separated by 90° azimuthal angles. The latter oscillation in the cylindrical liquid bridge has no remarkable frequency; however, it tends to have the antiphase correlation in between thermocouples with 180° azimuthal angles. In the ground experiment, temperature fluctuations have a characteristic frequency of 0.2 Hz and there is an antiphase correlation of temperatures in thermocouples with 180° azimuthal angles by using the slender melt zone.

元の言語英語
ページ(範囲)85-94
ページ数10
ジャーナルJournal of Crystal Growth
186
発行部数1-2
DOI
出版物ステータス出版済み - 3 1 1998

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liquid bridges
Microgravity
Silicon
Rockets
microgravity
rockets
Molten materials
thermocouples
Thermocouples
Liquids
silicon
oscillations
Melting
Temperature
temperature
melting
Experiments
IA 4
configurations

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

これを引用

Temperature fluctuations of the Marangoni flow in a liquid bridge of molten silicon under microgravity on board the TR-IA-4 rocket. / Nakamura, Shin; Hibiya, Taketoshi; Kakimoto, Koichi; Imaishi, Nobuyuki; Nishizawa, Shinichi; Hirata, Akira; Mukai, Kusuhiro; Yoda, Shin Ichi; Morita, Tomoji S.

:: Journal of Crystal Growth, 巻 186, 番号 1-2, 01.03.1998, p. 85-94.

研究成果: ジャーナルへの寄稿記事

Nakamura, Shin ; Hibiya, Taketoshi ; Kakimoto, Koichi ; Imaishi, Nobuyuki ; Nishizawa, Shinichi ; Hirata, Akira ; Mukai, Kusuhiro ; Yoda, Shin Ichi ; Morita, Tomoji S. / Temperature fluctuations of the Marangoni flow in a liquid bridge of molten silicon under microgravity on board the TR-IA-4 rocket. :: Journal of Crystal Growth. 1998 ; 巻 186, 番号 1-2. pp. 85-94.
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abstract = "Temperature fluctuation measurements in a liquid bridge of molten silicon, which shows the Marangoni flow in highly super-critical condition, are performed in a half-zone configuration under microgravity on board a TR-IA-4 rocket and on the ground. In the microgravity experiment, two types of temperature oscillation are observed during the melting process of silicon and in the cylindrical half-zone melt. The former oscillation, which has a frequency of about 0.1 Hz during the melting process, has an antiphase correlation of temperature oscillation measured in thermocouples separated by 90° azimuthal angles. The latter oscillation in the cylindrical liquid bridge has no remarkable frequency; however, it tends to have the antiphase correlation in between thermocouples with 180° azimuthal angles. In the ground experiment, temperature fluctuations have a characteristic frequency of 0.2 Hz and there is an antiphase correlation of temperatures in thermocouples with 180° azimuthal angles by using the slender melt zone.",
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AU - Imaishi, Nobuyuki

AU - Nishizawa, Shinichi

AU - Hirata, Akira

AU - Mukai, Kusuhiro

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