TY - JOUR
T1 - Validating ground-based aerodynamic levitation surface tension measurements through a study on Al2O3
AU - Sun, Yifan
AU - Duan, Guangtao
AU - Yamaji, Akifumi
AU - Takatani, Tomoya
AU - Muta, Hiroaki
AU - Ohishi, Yuji
N1 - Funding Information:
The authors would like to thank Prof. Ishikawa of Japan Aerospace Exploration Agency (JAXA) for his constructive criticism of the manuscript. This work was supported by JAEA Nuclear Energy S&T and Human Resource Development Project Through Concentrating Wisdom (Grant Number JPJA18B18071972), JSPS KAKENHI (Grant Number JP19K05332), and a Grant-in-Aid from a fellowship from JSPS (Grant Number 20J10376). A part of this study is the result of “Deepening Understanding of Ex-Vessel Corium Behavior by Multi-Physics Modeling" carried out under the Strategic Promotion Program for Basic Nuclear Research by the Ministry of Education, Culture, Sports, Science and Technology of Japan.
Funding Information:
The authors would like to thank Prof. Ishikawa of Japan Aerospace Exploration Agency (JAXA) for his constructive criticism of the manuscript. This work was supported by JAEA Nuclear Energy S&T and Human Resource Development Project Through Concentrating Wisdom (Grant Number JPJA18B18071972), JSPS KAKENHI (Grant Number JP19K05332), and a Grant-in-Aid from a fellowship from JSPS (Grant Number 20J10376). A part of this study is the result of “Deepening Understanding of Ex-Vessel Corium Behavior by Multi-Physics Modeling" carried out under the Strategic Promotion Program for Basic Nuclear Research by the Ministry of Education, Culture, Sports, Science and Technology of Japan.
Publisher Copyright:
© 2022, The Author(s).
PY - 2022/12
Y1 - 2022/12
N2 - 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.
AB - 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.
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U2 - 10.1038/s41526-022-00213-8
DO - 10.1038/s41526-022-00213-8
M3 - Article
AN - SCOPUS:85134396322
SN - 2373-8065
VL - 8
JO - npj Microgravity
JF - npj Microgravity
IS - 1
M1 - 26
ER -