2016年2月
Inhomogeneous distribution of Chlamydomonas in a cylindrical container with a bubble plume
BIOLOGY OPEN
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- 巻
- 5
- 号
- 2
- 開始ページ
- 154
- 終了ページ
- 160
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1242/bio.015669
- 出版者・発行元
- COMPANY OF BIOLOGISTS LTD
Swimming microalgae show various taxes, such as phototaxis and gravitaxis, which sometimes result in the formation of a cell-rich layer or a patch in a suspension. Despite intensive studies on the effects of shear flow and turbulence on the inhomogeneous distribution of microalgae, the effect of a bubble plume has remained unclear. In this study, we used Chlamydomonas as model microalgae, and investigated the spatial distribution of cells in a cylindrical container with a bubble plume. The results illustrate that cells become inhomogeneously distributed in the suspension due to their motility and photo-responses. A vortical ring distribution was observed below the free surface when the bubble flow rate was sufficiently small. We performed a scaling analysis on the length scale of the vortical ring, which captured the main features of the experimental results. These findings are important in understanding transport phenomena in a microalgae suspension with a bubble plume.
- リンク情報
- ID情報
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- DOI : 10.1242/bio.015669
- ISSN : 2046-6390
- Web of Science ID : WOS:000370240300008