Numerical Study on the Influence of the Oscillating Surface Oxygen Concentration on the Bioconvection in a Two-Dimensional Deep Chamber
Numerical study on the two-dimensional bioconvection in a deep chamber was carried out under the condition of the oscillating surface oxygen concentration to obtain the basic data for the control of bioconvection by using the surface oxygen concentration. As the numerical results in a large &Gam...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2010-04-01
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| Series: | Journal of Fluid Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jfst/5/2/5_2_247/_pdf/-char/en |
| _version_ | 1818942642695700480 |
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| author | Masahide NAKAMURA Yuusuke ISHIMI Orie TAMURA Wataru SUGIYAMA |
| author_facet | Masahide NAKAMURA Yuusuke ISHIMI Orie TAMURA Wataru SUGIYAMA |
| author_sort | Masahide NAKAMURA |
| collection | DOAJ |
| description | Numerical study on the two-dimensional bioconvection in a deep chamber was carried out under the condition of the oscillating surface oxygen concentration to obtain the basic data for the control of bioconvection by using the surface oxygen concentration. As the numerical results in a large Γ region have an important meaning from a practical viewpoint, the numerical calculations were carried out within the range of 100000 ≤ Γ ≤ 500000, where Γ is a non-dimensional parameter that corresponds to the Rayleigh number in natural convection. The calculation results are summarized as follows. (1) The inactive zone where the bacteria do not swim actively is formed near the bottom of chamber. (2) The oscillating surface oxygen concentration has an effect to enhance the cell sedimentation. (3) The enhancement of the cell sedimentation due to the oscillating surface oxygen concentration becomes remarkable with the decrease in Γ. |
| first_indexed | 2024-12-20T07:14:41Z |
| format | Article |
| id | doaj.art-1c71eecdb3aa43aab02e817a08bd1cc0 |
| institution | Directory Open Access Journal |
| issn | 1880-5558 |
| language | English |
| last_indexed | 2024-12-20T07:14:41Z |
| publishDate | 2010-04-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Fluid Science and Technology |
| spelling | doaj.art-1c71eecdb3aa43aab02e817a08bd1cc02022-12-21T19:48:50ZengThe Japan Society of Mechanical EngineersJournal of Fluid Science and Technology1880-55582010-04-015224725810.1299/jfst.5.247jfstNumerical Study on the Influence of the Oscillating Surface Oxygen Concentration on the Bioconvection in a Two-Dimensional Deep ChamberMasahide NAKAMURA0Yuusuke ISHIMI1Orie TAMURA2Wataru SUGIYAMA3Mechanical Engineering, Akita UniversityMitsui Engineering & Shipbuilding Co., Ltd.Mechanical Engineering, Akita UniversityMechanical Engineering, Akita UniversityNumerical study on the two-dimensional bioconvection in a deep chamber was carried out under the condition of the oscillating surface oxygen concentration to obtain the basic data for the control of bioconvection by using the surface oxygen concentration. As the numerical results in a large Γ region have an important meaning from a practical viewpoint, the numerical calculations were carried out within the range of 100000 ≤ Γ ≤ 500000, where Γ is a non-dimensional parameter that corresponds to the Rayleigh number in natural convection. The calculation results are summarized as follows. (1) The inactive zone where the bacteria do not swim actively is formed near the bottom of chamber. (2) The oscillating surface oxygen concentration has an effect to enhance the cell sedimentation. (3) The enhancement of the cell sedimentation due to the oscillating surface oxygen concentration becomes remarkable with the decrease in Γ.https://www.jstage.jst.go.jp/article/jfst/5/2/5_2_247/_pdf/-char/enbio-fluid mechanicscomputational fluid dynamicsunsteady flowinternal flowspectrum analysis |
| spellingShingle | Masahide NAKAMURA Yuusuke ISHIMI Orie TAMURA Wataru SUGIYAMA Numerical Study on the Influence of the Oscillating Surface Oxygen Concentration on the Bioconvection in a Two-Dimensional Deep Chamber Journal of Fluid Science and Technology bio-fluid mechanics computational fluid dynamics unsteady flow internal flow spectrum analysis |
| title | Numerical Study on the Influence of the Oscillating Surface Oxygen Concentration on the Bioconvection in a Two-Dimensional Deep Chamber |
| title_full | Numerical Study on the Influence of the Oscillating Surface Oxygen Concentration on the Bioconvection in a Two-Dimensional Deep Chamber |
| title_fullStr | Numerical Study on the Influence of the Oscillating Surface Oxygen Concentration on the Bioconvection in a Two-Dimensional Deep Chamber |
| title_full_unstemmed | Numerical Study on the Influence of the Oscillating Surface Oxygen Concentration on the Bioconvection in a Two-Dimensional Deep Chamber |
| title_short | Numerical Study on the Influence of the Oscillating Surface Oxygen Concentration on the Bioconvection in a Two-Dimensional Deep Chamber |
| title_sort | numerical study on the influence of the oscillating surface oxygen concentration on the bioconvection in a two dimensional deep chamber |
| topic | bio-fluid mechanics computational fluid dynamics unsteady flow internal flow spectrum analysis |
| url | https://www.jstage.jst.go.jp/article/jfst/5/2/5_2_247/_pdf/-char/en |
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