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計算による3次元非定常流れの可視化
https://jaxa.repo.nii.ac.jp/records/43301
https://jaxa.repo.nii.ac.jp/records/43301578b1985-1a8e-4cdd-beeb-7fe1ea37e9a8
名前 / ファイル | ライセンス | アクション |
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nalsp0009010.pdf (1.3 MB)
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Item type | テクニカルレポート / Technical Report(1) | |||||
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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
× 藤谷, 克郎× 姫野, 龍太郎× Fujitani, Katsuro× Himeno, Ryutaro |
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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 |
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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 | ||||||
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 |