Polymer effects on Kármán vortex: Molecular dynamics study

Yuta Asano, Hiroshi Watanabe, Hiroshi Noguchi

研究成果: Article査読

11 被引用数 (Scopus)

抄録

We investigated the Kármán vortex behind a circular cylinder in a polymer solution by a molecular dynamics simulation. The vortex characteristics are distinctly different for short and long polymers. The solution with the long polymer exhibits a reduction in the vortex shedding frequency and broadening of the lift coefficient spectrum. On the other hand, the characteristics of the short-polymer solution are almost the same as those of the Newtonian fluid. These facts are consistent with the experiments. Because the distributions of the gyration radius and the orientational order of the long-polymer solution are highly inhomogeneous in the flow field, we conclude that the extensional property of the polymer plays an important role in changing the flow characteristics.

本文言語English
論文番号144901
ジャーナルJournal of Chemical Physics
148
14
DOI
出版ステータスPublished - 2018 4月 14
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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