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KAKEN_15K05201seika.pdf
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:352.3 KB
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| Last updated |
:Mar 5, 2021 |
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Total downloads since Mar 5, 2021 : 149
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| Title |
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不純物・相転移を伴う複雑流体の分子論からの数値解析
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| Kana |
フジュンブツ・ソウテンイ オ トモナウ フクザツ リュウタイ ノ ブンシロン カラ ノ スウチ カイセキ
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Fujunbutsu sōten'i o tomonau fukuzatsu ryūtai no bunshiron kara no sūchi kaiseki
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Molecular dynamics study on complex fluid with impurities and bubbles
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渡辺, 宙志
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ワタナベ, ヒロシ
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Watanabe, Hiroshi
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| Affiliation |
慶應義塾大学・理工学部 (矢上) ・准教授
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Research team head
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科研費研究者番号 : 50377777
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2020
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科学研究費補助金研究成果報告書
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2019
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| Abstract |
ポリマーなどの不純物や、気泡生成などの相転移と流れがカップルした複雑流体の振る舞いを分子動力学法によるシミュレーションにより解析した。特に、円柱後方に発生するカルマン渦に注目し、高分子を添加すると渦がぼやけること、高分子の長さが重要であること、気泡生成を伴う流れでは、渦が発生する場所が後方にずれ、その結果円柱にかかる渦からの反作用が消えることなどを明らかにした。
The behavior of complex fluids, which contains polymers or bubbles, was investigated by molecular dynamics simulations. We have studied the Kalman vortexes occurring at the rear of the cylinder and found that the vortexes become blurred for fluid with polymers. This phenomenon did not occur when the length of the polymer was short, indicating that the length of the polymer was important. In a flow with bubble formation, the position of the vortex generation shifted to the rear and the reaction from the vortexes on the cylinder disappears. These findings can only be obtained by studying the molecular scale by molecular dynamics methods.
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研究種目 : 基盤研究 (C) (一般)
研究期間 : 2015～2019
課題番号 : 15K05201
研究分野 : 統計力学
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