Validating ground-based aerodynamic levitation surface tension measurements through a study on Al2O3

Yifan Sun*, Guangtao Duan, Akifumi Yamaji, Tomoya Takatani, Hiroaki Muta, Yuji Ohishi

*この研究の対応する著者

研究成果: Article査読

抄録

The surface tension of a molten sample can be evaluated based on its resonant frequency with various levitation techniques. Under a 1-G condition, the use of levitation forces to counteract gravity will cause the levitated sample’s resonant frequency to differ from that under microgravity. A mathematical relationship to correct for this deviation is not available for a sample levitated with aerodynamic levitation (ADL), which raises issues on the validity of surface tension measurements done with ADL. In this study, we compared the surface tension of molten Al2O3 obtained using the front tracking (FT) simulation method, the drop-bounce method with ADL, and the oscillating drop method with ADL. The drop-bounce method simulates microgravity by allowing the sample to free-fall over a period of tens of milliseconds. Based on the results of this comparison, we determined that the surface tension of molten materials measured with ground-based ADL with the oscillating drop method, calculated using the resonant frequency of the l=2 m=0 mode, only shows a small deviation from that obtained under microgravity.

本文言語English
論文番号26
ジャーナルnpj Microgravity
8
1
DOI
出版ステータスPublished - 2022 12月

ASJC Scopus subject areas

  • 医学(その他)
  • 材料科学(その他)
  • 生化学、遺伝学、分子生物学(その他)
  • 農業および生物科学(その他)
  • 物理学および天文学(その他)
  • 宇宙惑星科学

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