| Item type |
テクニカルレポート / Technical Report(1) |
| 公開日 |
2015-03-26 |
| タイトル |
|
|
タイトル |
計算による3次元非定常流れの可視化 |
| 言語 |
|
|
言語 |
jpn |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_18gh |
|
資源タイプ |
technical report |
| その他のタイトル(英) |
|
|
その他のタイトル |
Visualization of the Computed Unsteady Flow in Three Dimensions |
| 著者 |
藤谷, 克郎
姫野, 龍太郎
Fujitani, Katsuro
Himeno, Ryutaro
|
| 著者所属 |
|
|
|
日産自動車開発システム部 |
| 著者所属 |
|
|
|
日産自動車中央研究所車両研究所 |
| 著者所属(英) |
|
|
|
en |
|
|
Nissan Motor Co., Ltd. |
| 著者所属(英) |
|
|
|
en |
|
|
Nissan Motor Co., Ltd. |
| 出版者 |
|
|
出版者 |
航空宇宙技術研究所 |
| 出版者(英) |
|
|
出版者 |
National Aerospace Laboratory(NAL) |
| 書誌情報 |
航空宇宙技術研究所特別資料
en : Special Publication of National Aerospace Laboratory SP-9
巻 9,
p. 61-66,
発行日 1988-12
|
| 抄録(英) |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Three-dimensional unsteady flow of the viscous incompressible fluid is calculated by using a finite-difference method and visualized by a graphic workstation. A grid system around an automobile has a multi-grid structure and is generated by a trans-finite-inter-polation method. The number of grid points is 112 by 73 by 56 and the Reynolds number based on the length of the automobile is 5,000,000. The calculation of a flow field is done on Fujitsu VP200 and its computational time is about 20 hours. Computed flow fields of 200 time steps are stored in magnetic tapes. Using them, streak-lines are calculated on a mini-supercomputer C-1 and even then visualized on a graphic workstation IRIS 4D. A motion film is taken the screen of IRIS 4D frame by flame using a computer-controlled VTR system. A longitudinal vortex on the side-window is almost steady. However, the other vortices, such as a horse-shoe vortex in front of the front windshield and vortices on the rear-window, show periodical changes and are shed one by one. It is found that a motion film makes the unsteady three-dimensional flow understandable and inevitable. Also, the amount of the data of the three-dimensional unsteady calculation is so huge that adequate shortening of data is necessary. |
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0289-260X |
| 書誌レコードID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN10097345 |
| 資料番号 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
資料番号: NALSP0009010 |
| レポート番号 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
レポート番号: NAL SP-9 |