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波状壁に沿う流れの構造と抵抗
https://jaxa.repo.nii.ac.jp/records/37788
https://jaxa.repo.nii.ac.jp/records/377887539da4f-ac0e-4249-8fb5-2be7bf0e92da
名前 / ファイル | ライセンス | アクション |
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nalsp0022027.pdf (634.0 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 | 波状壁に沿う流れの構造と抵抗 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 波状壁流れ | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 波状壁抵抗特性 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流れ剥離パターン | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 周期的壁面条件 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流れ関数渦度法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 渦度輸送方程式 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 2次元ナビエ・ストークス方程式数値解 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 境界適合座標系 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 渦放出パターン | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流れ数値シミュレーション | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | SOR | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 逐次過剰緩和法 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | wavy wall flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | wavy wall drag characteristic | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | flow separation pattern | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | periodic wall configuration | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | stream function vorticity method | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | vorticity transport equation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | two dimensional Navier Stokes equation numerical solution | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | boundary fitted coordinate | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | vortex shedding pattern | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | numerical flow simulation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | SOR | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Successive Over Relaxation method | |||||
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 | Structure and drag of laminar flow over wavy walls | |||||
著者 |
谷口, 貴司
× 谷口, 貴司× 西川, 進栄× 蔦木, 重雄× 板倉, 嘉哉× Taniguchi, Takashi× Nishikawa, Nobuhide× Tsutaki, Shigeo× Itakura, Yoshiya |
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著者所属 | ||||||
千葉大学 大学院 | ||||||
著者所属 | ||||||
千葉大学 工学部 機械工学科 | ||||||
著者所属 | ||||||
千葉大学 大学院 | ||||||
著者所属 | ||||||
千葉大学 工学部 機械工学科 | ||||||
著者所属(英) | ||||||
en | ||||||
Chiba University Graduate School | ||||||
著者所属(英) | ||||||
en | ||||||
Chiba University Department of Mechanical Engineering, Faculty of Engineering | ||||||
著者所属(英) | ||||||
en | ||||||
Chiba University Graduate School | ||||||
著者所属(英) | ||||||
en | ||||||
Chiba University Department of Mechanical Engineering, Faculty of Engineering | ||||||
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: 第11回航空機計算空気力学シンポジウム論文集 en : Special Publication of National Aerospace Laboratory: Proceedings of the 11th NAL Symposium on aircraft computational aerodynamics 巻 22, p. 163-168, 発行日 1994-03 |
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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 10-11 Jun. 1993 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 10-11 Jun. 1993 Tokyo Japan | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 波状壁に沿う2次元粘性非圧縮性流れについての数値的研究を行った。用いた方法は、ψ-ω法に境界適合座標系を適用したものである。このψ-ω法ではナビエ・ストークス方程式対流項の差分化に河村-桑原スキームを用い、時間積分はMOL(線の方法)を用いる。モデル問題は波状壁上の流れで、高さ2a、波長λの凹凸が続くものとする。数値実験では2a/λ=0.1、0.2、0.4とし、レイノルズ数は1000,2000,3000,4000とした。この問題を選んだ理由は、2a/λとレイノルズ数を適当に選ぶことにより異なった剥離パターンをもつ流れを調べられるからである。剥離点と再付着点が前もっては不明であるような波状壁を扱った。物理的および数値的観点から特に関心のある流れの特徴は、始めは完全に発達していた流れが空間の周期的な条件に適応する過程と、特定の振幅に対して剥離泡のくり返し発生がみられることである。そのような場合は抵抗減少と熱伝達の増加の点で興味がある。連続した凹凸のある壁面にCFD(計算空気力学)を適用する場合、凸な曲率と凹な曲率とに対応して順圧力勾配と逆圧力勾配が交互に現れる効果を解析する必要がある。 | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | In the present paper a numerical study is conducted for viscous two-dimensional incompressible flow over wavy walls. The employed method is an application of the Boundary Fitted Coordinate for phi-omega method. In the phi - omega method the finite differencing of the convection terms in Navier-Stokes equations employs Kawamura and Kuwahara scheme, and the time integration is performed with M.O.L. (Method Of Lines) method. The model problem is the flow past over wavy balls. A sequential protuberance of height 2a and wavelength lambda is considered. In the numerical experiments. 2a/lambda = 0.1, 0.2, 0.4, and Reynolds numbers R(sub e) = 1000, 2000, 3000, 4000. The reason for choosing this problem is that, by suitable choice of 2a/lambda, and Reynolds number, it is possible to examine flows with different separation patterns. It is the flow past over wavy walls, with separation and reattachment points not known a priori. The flow features of particular concern, both from numerical as bell as physical viewpoints. are the adjustment of the initially fully developed flow to a spatially periodic condition and, for specific amplitudes, the occurrence of repeated separation bubbles. Such configurations are of interest in drag reduction and heat-transfer enhancement. In the application of CFD (Computational Fluid Dynamics) for walls with sequential protuberances, the effect of alternating favorable and adverse pressure gradients should be analyzed, which correspond to convex and concave surface curvatures on the ball. | |||||
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: AA0004171028 | |||||
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-22 |