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Numerical Study on Cut-and-Connect of Three-Dimensional Vortex Tubes
https://jaxa.repo.nii.ac.jp/records/31406
https://jaxa.repo.nii.ac.jp/records/31406fb8c43e0-04fe-4f7e-8aaf-9602f181b32c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA0035108.pdf (2.8 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||||
| タイトル | ||||||||
| タイトル | Numerical Study on Cut-and-Connect of Three-Dimensional Vortex Tubes | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | departmental bulletin paper | |||||||
| 著者 |
CHEN, H.L.
× CHEN, H.L.
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| 出版者 | ||||||||
| 出版者 | 宇宙科学研究所 | |||||||
| 出版者（英） | ||||||||
| 出版者 | Institute of Space and Astronautical Science | |||||||
| 書誌情報 |
en : The Institute of Space and Astronautical Science report 巻 639, p. 1-62, 発行日 1991-02 |
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| 抄録（英） | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | In the present study, generation of two vortex rings and their cut-and-connect process were numerically simulated by solving three-dimensional and time-dependent Navier-Stokes equations, under conditions similar to the laboratory experiment. In order to explain the mechanism of cut-and-connect, velocity, vorticity, pressure, helicity density and energy dissipation were examined for the flow field of the cut-and-connect of vortex rings. The present study revealed that energy dissipation is an essential process for circulation cancellation during vortex tubes cutting. Based on this energy dissipation mechanism, it is concluded that the cut-and-connect of vortex tubes may occur in the limit of inviscid flows. This conclusion is particularly important to the three-dimensional discrete vortex method for computing high Reynolds number flows. Features of helicity in the three-dimensional flow field of cut-and-connect process of vortex tubes were also investigated. The relation between the helicity density and the energy dissipation function in the three-dimensional flow field was examined. | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0285-6808 | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA10632072 | |||||||
| 資料番号 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 資料番号: SA0035108000 | |||||||
