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Numerical simulation of the flow around a four-dimensional sphere in a four-dimensional duct
http://hdl.handle.net/10083/0002000439
http://hdl.handle.net/10083/00020004392f594413-d46b-4e46-a31f-5d0c2e118ee0
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
03_Tetuya Kawamura.pdf (360 KB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
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| 公開日 | 2022-03-30 | |||||||
| タイトル | ||||||||
| タイトル | Numerical simulation of the flow around a four-dimensional sphere in a four-dimensional duct | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||
| タイプ | departmental bulletin paper | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| 著者 |
KAWAMURA, Tetuya
× KAWAMURA, Tetuya
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | In this report, the flow around a four-dimensional sphere placed in a duct having a four-dimensional rectangular parallelepiped shape is investigated by numerical simulations. The incompressible Navier-Stokes equations with the fourth coordinate and velocity component are used as the basic equations. Fractional step method is employed to solve the equations. For the high Reynolds number flow, the calculation is stabilized by using the third-order accuracy upstream difference for the approximation of the nonlinear term of the Navier-Stokes equations. From the results, it is found that when the Reynolds number is not high, a vortex corresponding to the twin vortex in the case of a cylinder is generated, but its length is shorter than that of a cylinder or a sphere. When the Reynolds number is high, the above vortex becomes unstable and shifts to a new flow and the structure of the flow is remarkable in four-dimensionality. From the computational results of pressure, it is found that the pressure drag of the four-dimensional sphere is smaller than that of the three-dimensional sphere. |
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| 言語 | en | |||||||
| 書誌情報 |
お茶の水女子大学自然科学報告 巻 72, 号 1-2, p. 27-35, 発行日 2022-02 |
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| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| 出版者 | ||||||||
| 出版者 | お茶の水女子大学 | |||||||
