An experimental and numerical study on flagellar spiral motion

Naoki Ono, Hirotaka Fukushima, Yusuke Inui

研究成果: Article

抄録

Microbes can move smoothly in water environment with high efficiency, which could offer innovative ideas for micro hydro machines in future. In this study, we investigated the spiral movement of flagellum by using numerical and exerimental models. We simulated a microbe's fluid environment of Re number of 10-4. The model study revealed that the maximum values of driving force and fluid velocity appeared depending on the model's roll number and spiral diameter. The occurrence of the maximum was explained by the two competing factors, which were the increase in longitudinal velocity and the decrease of spiral wave velocity as the roll number increased.

元の言語English
ページ(範囲)1862-1869
ページ数8
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
76
発行部数771
出版物ステータスPublished - 2010 11

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microorganisms
Fluids
fluids
occurrences
water
Water

ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics

これを引用

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AB - Microbes can move smoothly in water environment with high efficiency, which could offer innovative ideas for micro hydro machines in future. In this study, we investigated the spiral movement of flagellum by using numerical and exerimental models. We simulated a microbe's fluid environment of Re number of 10-4. The model study revealed that the maximum values of driving force and fluid velocity appeared depending on the model's roll number and spiral diameter. The occurrence of the maximum was explained by the two competing factors, which were the increase in longitudinal velocity and the decrease of spiral wave velocity as the roll number increased.

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KW - Reynolds number

KW - Scaling law

KW - Spiral motion

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