Observation of Periodic Marangoni Convection in a Molten Silicon Bridge on board the TR-IA-6 Rocket
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- NAKAMURA Shin
- Fundamental Research Laboratories, NEC Corporation
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- HIBIYA Taketoshi
- Fundamental Research Laboratories, NEC Corporation
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- IMAISHI Nobuyuki
- Institute of Advanced Material Study, Kyushu University
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- YODA Shinichi
- Space Experiment Department, National Space Development Agency of Japan
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- NAKAMURA Tomihisa
- Space Experiment Department, National Space Development Agency of Japan
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- KOYAMA Masato
- Japan Space Utilization Promotion Center
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- DOLD Peter
- Kristallographisches Institut, University of Freiburg
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- BENZ Klaus W.
- Kristallographisches Institut, University of Freiburg
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Marangoni convection in a silicon melt was investigated from viewpoint of a heat and mass transfer for a low Prandtl number liquid. Temperature measurement and flow visualization in a half-zone bridge of molten silicon were carried out in a microgravity condition using the NASDA TR-IA-6 rocket. Fourier-transformation analysis of temperature fluctuations showed several peak frequencies for the microgravity condition when a Marangoni number Ma was 1900. On the other hand, a single peak was seen when Ma= 1315 in the 1-G reference experiment. It suggests that the transition from non-periodic to periodic flow of the silicon Marangoni convection in a half-zone liquid bridge system exists between these conditions. With using the x-ray radiography, tracer motions in the azimuthal directions were observed near the molten silicon surface. This observation indicated that the tracer motions were driven by the temperature fluctuations in the azimuthal direction.
収録刊行物
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- 日本マイクログラビティ応用学会誌
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日本マイクログラビティ応用学会誌 16 (2), 99-, 1999-04-30
日本マイクログラビティ応用学会
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詳細情報 詳細情報について
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- CRID
- 1390849931330503040
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- NII論文ID
- 10002845755
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- NII書誌ID
- AN10537663
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- NDL書誌ID
- 4733345
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- ISSN
- 09153616
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可