Transitions of Three-Dimensional Flow through a Rectangular Duct with a Suddenly Expanded and Contracted Part.
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- Mizushima Jiro
- Department of Mechanical Engineering, Faculty of Engineering, Doshisha University, Kyoto 610-0321
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- Inui Takashi
- Department of Mechanical Engineering, Faculty of Engineering, Doshisha University, Kyoto 610-0321
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抄録
Transitions of three-dimensional flow through a symmetric rectangular duct with a suddenly expanded and contracted part are investigated by numerical simulations and bifurcation analyses of the numerical simulation data. The flow is steady and symmetric at low Reynolds numbers, makes a transition to a steady asymmetric flow at a critical Reynolds number owing to a symmetry-breaking pitchfork bifurcation and recovers the symmetry at another critical Reynolds number. Our attention is focussed on the side-wall effect upon the critical Reynolds number for the first pitchfork bifurcation. It is found that the critical Reynolds number is proportional to the inverse of the width of the duct. The three-dimensional flow structure is discussed in comparison with the two-dimensional one.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 70 (5), 1171-1174, 2001
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390282679158036480
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- NII論文ID
- 210000103022
- 110001971966
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2001JPSJ...70.1171M
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 5788486
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可