Analysis of Surface Tension and Viscosity by Oscillation Drop Method Including Sample Rotation Effects
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- HIGUCHI Kensuke
- Faculty of science, Gakushuin University
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- WATANABE Masahito
- Faculty of science, Gakushuin University
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- WUNDERLICH Rainer. K.
- Faculty of Engineering, Institute of Micro and Nanomaterials, Ulm University
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- FECHT ・Hans-J.
- Faculty of Engineering, Institute of Micro and Nanomaterials, Ulm University
Bibliographic Information
- Other Title
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- 回転を考慮した液滴振動法による表面張力と粘性係数の解析
- カイテン オ コウリョシタ エキテキ シンドウホウ ニ ヨル ヒョウメン チョウリョク ト ネンセイ ケイスウ ノ カイセキ
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Abstract
We precisely analyzed the surface tension and the viscosity of Ni-Al and Ti-Al melts by the oscillation drop method including droplets rotation effects. Under microgravity conditions, beat-like radius variations due to drop method were pbserved on the oscillating droplets in electromagnetic levitation (EML) experiments. The beat-like radius variation prevents to evaluate the surface tension and the viscosity, thus we need to solve the problem about droplet rotation for obtaining the correct surface tension and viscosity. From this purpose, we performed numerically simulation of three-dimensional droplet shap with rotation, surface oscillation by the surface tension and its damping by the viscosity. From the simulation result, we proposed analytical technique to exaluate surface tension and viscosity from the beat-like radius variations of surface oscillating dloplet with rotations. We applied the technique into the oscillating drop date of Ni-Al and Ti-Al melts obtained by EML experiments using TEMPUS under microgravity conditions on board parabolic flights. As a result, it was confirmed that the surface tension snd viscosity were precisely determined even undersroplet rotating conditions.
Journal
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- Journal of The Japan Society of Microgravity Application
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Journal of The Japan Society of Microgravity Application 24 (2), 169-, 2007-04-30
The Japan Society of Microgravity Application
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Details 詳細情報について
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- CRID
- 1391975831237567744
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- NII Article ID
- 40015477370
- 130007972156
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- NII Book ID
- AN10537663
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- NDL BIB ID
- 8815643
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- ISSN
- 09153616
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- Crossref
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- Abstract License Flag
- Disallowed