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正方形角柱まわりの流れの数値計算
https://jaxa.repo.nii.ac.jp/records/4712
https://jaxa.repo.nii.ac.jp/records/471232f7f607-2775-4f8f-9052-b374c91228fe
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
64967005.pdf (1.4 MB)
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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 | 正方形角柱まわりの流れの数値計算 | |||||||||
| 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_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 Simulation of Flow around a Square Cylinder | |||||||||
| 著者 |
黒田, 眞一
× 黒田, 眞一
× Kuroda, Shinichi
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| 著者所属 | ||||||||||
| IHI | ||||||||||
| 著者所属（英） | ||||||||||
| en | ||||||||||
| IHI | ||||||||||
| 出版者 | ||||||||||
| 出版者 | 宇宙航空研究開発機構 | |||||||||
| 出版者（英） | ||||||||||
| 出版者 | Japan Aerospace Exploration Agency (JAXA) | |||||||||
| 書誌情報 |
宇宙航空研究開発機構特別資料: 第42回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2010 論文集 en : JAXA Special Publication: Proceedings of 42nd Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2010 巻 JAXA-SP-10-012, 発行日 2011-02-28 |
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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 | 第42回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2010 (2010年6月24日-25日. 米子コンベンションセンター BiG SHiP) | |||||||||
| 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 | 42nd Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2010 (June 24-25, 2010. Yonago Convention Center BiG SHiP), Yonago, Tottori Japan | |||||||||
| 抄録（英） | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | To predict behavior of such structures as long span bridges in turbulent winds, it is important to evaluate quantitatively the spanwise correlation of fluctuating pressures on their surfaces. However there have not been many instances in which numerical prediction of the spanwise correlation was attempted. In the present paper, prediction of the spanwise correlation of fluctuating pressures on side surfaces of a square cylinder in a smooth flow was done as a try with a grid that has the same spanwise length as a windtunnel model and is relatively fine. The filtered incompressible Naivier-Stokes equations are used as governing equations. Smagorinsky model is employed as the subgrid-scale model. The numerical algorithm is based on the method of pseudocompressibility. The convective terms are differenced with a fifth-order upwind scheme. The viscous fluxes are differenced with second-order accurate central differences. To solve the algebraic equations resulting from the implicit time differencing, an unfactored line-relaxation scheme is used. The implicit scheme is second-order in time. The numerical code was verified using a test case of the turbulent channel flows. It is then applied to prediction of the spanwise correlation of fluctuating pressures on a square cylinder. The calculated spanwise correlation agreed well with the experimental results of Vickery (J. Fluid Mech., Vol.25, 1966). In the computation, amplitudes of lift coefficient variations dropped almost to zero intermittently. When the amplitude became very small, the fluctuating pressure on the side surfaces and the separating shear layers had opposite phases in two adjacent regions along the spanwise direction of the cylinder. | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 形態: カラー図版あり | |||||||||
| 内容記述（英） | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | Physical characteristics: Original contains color illustrations | |||||||||
| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 1349-113X | |||||||||
| 書誌レコードID | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA11984031 | |||||||||
| 資料番号 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 資料番号: AA0064967005 | |||||||||
| レポート番号 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | レポート番号: JAXA-SP-10-012 | |||||||||
