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直接数値シミュレーションに基づく乱流構造の数値解析
https://jaxa.repo.nii.ac.jp/records/36794
https://jaxa.repo.nii.ac.jp/records/36794020f382e-2204-429d-86e1-727ca3ca01a6
名前 / ファイル | ライセンス | アクション |
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nalsp0030026.pdf (521.3 kB)
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Item type | 会議発表論文 / Conference Paper(1) | |||||
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公開日 | 2015-03-26 | |||||
タイトル | ||||||
タイトル | 直接数値シミュレーションに基づく乱流構造の数値解析 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 減衰等方性乱流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 直接数値シミュレーション | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 数値風洞プログラム | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流れ構造 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 温度勾配 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 受動スカラー場 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 渦度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 渦管領域 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | シート状空間領域 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 固有ベクトル | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 歪み速度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | テンソル場 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 空間格子点 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | decaying isotropic turbulent flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | direct numerical simulation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | numerical wind tunnel program | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | flow structure | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | temperature gradient | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | passive scalar field | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | vorticity | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | worm like region | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | sheet like spatial region | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | eigen vector | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | strain rate | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | tensor field | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | spatial mesh point | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
資源タイプ | conference paper | |||||
その他のタイトル(英) | ||||||
その他のタイトル | Numerical analysis of turbulence based on a DNS data base | |||||
著者 |
生出, 伸一
× 生出, 伸一× 山口, 博× 細川, 巖× 山本, 稀義× 末松, 和代× Oide, Shinichi× Yamaguchi, Hiroshi× Hosokawa, Iwao× Yamamoto, Kiyoshi× Suematsu, Kazuyo |
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著者所属 | ||||||
電気通信大学 | ||||||
著者所属 | ||||||
電気通信大学 | ||||||
著者所属 | ||||||
電気通信大学 | ||||||
著者所属 | ||||||
航空宇宙技術研究所 | ||||||
著者所属 | ||||||
航空宇宙技術研究所 | ||||||
著者所属(英) | ||||||
en | ||||||
University of Electro-Communications | ||||||
著者所属(英) | ||||||
en | ||||||
University of Electro-Communications | ||||||
著者所属(英) | ||||||
en | ||||||
University of Electro-Communications | ||||||
著者所属(英) | ||||||
en | ||||||
National Aerospace Laboratory | ||||||
著者所属(英) | ||||||
en | ||||||
National Aerospace Laboratory | ||||||
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 巻 30, p. 147-152, 発行日 1996-01 |
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会議概要(会議名, 開催地, 会期, 主催者等) | ||||||
内容記述タイプ | Other | |||||
内容記述 | 航空宇宙技術研究所 7-9 Jun. 1995 東京 日本 | |||||
会議概要(会議名, 開催地, 会期, 主催者等)(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | National Aerospace Laboratory 7-9 Jun. 1995 Tokyo Japan | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 数値風洞(NWT)を用いて減衰等方性乱流の直接数値シミュレーション(DNS)を行った。完全に発達した乱流と受動スカラー場、温度が、最高512{3}の空間格子点数を有するDNSにより得られた。流れ解析の結果、乱流渦度の強い部分が渦管領域に集中するが、温度勾配はシート状空間領域を示すことが分かった。渦管領域に密接するほとんどの渦度ベクトルは、歪み速度テンソルの中間固有値に相当する固有ベクトルの方向に1列に並ぶ。これとは反対にシート状領域に密着する温度勾配ベクトルのほとんどは、歪み速度テンソルの負の固有値に相当する固有ベクトルの方向を向く。以上の結果、渦管領域ではBurgerの渦と類似の特性を有すること、一方、温度勾配のシート状領域の形成メカニズムは未解明であることを示した。 | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Direct Numerical Simulation (DNS) of decaying isotropic turbulence was made using the Numerical Wind Tunnel (NWT). A fully developed turbulent flow and a passive scalar field, temperature, were obtained by the DNS with up to 512(exp 3) mesh points in space. From the analysis of the flow, it is obtained that intense portions of the turbulent vorticity concentrate into worm-like regions, but those of the temperature gradient into sheet-like regions in space. Most vorticity vectors nearby the worm-like regions align into the direction of the eigen vectors corresponding to the intermediate eigenvalue of the strain rate tensor. In contrast with this, most temperature gradient vectors nearby the sheet-like regions align into the direction of the eigen vectors corresponding to the negative eigenvalue of the strain rate tensor. These results show that the worm-like regions have a similar property to Burger's Vortex. On the other hand, the mechanism forming the sheet-like regions of temperature gradient is not yet clear. | |||||
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: AA0000294026 | |||||
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-30 |