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拡大部を持つ管路流れの多重解と衝撃自由剪断層不安定性
https://jaxa.repo.nii.ac.jp/records/37418
https://jaxa.repo.nii.ac.jp/records/374187521af00-17a3-414f-9942-16f55e472e16
名前 / ファイル | ライセンス | アクション |
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nalsp0043021.pdf (900.0 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 | 拡大部を持つ管路流れの多重解と衝撃自由剪断層不安定性 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 境界層遷移 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 数値シミュレーション | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 急拡大管路流れ | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ジェット流 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 衝撃自由剪断層不安定性 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 時間前進法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | SOR法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 逐次過大緩和法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 有限要素法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 多重安定定常解 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 管路流れの分岐 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 線形安定性理論 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 弱非線形性安定理論 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | boundary layer transition | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | numerical simulation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | suddenly expanded channel flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | jet flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | impinging free shear layer instability | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | time marching method | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | SOR method | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | successive over relaxation method | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | finite element method | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | multiple stable steady solution | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | channel flow bifurcation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | linear stability theory | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | weakly nonlinear stability theory | |||||
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 | Multiple stable solutions of flow in a channel with a wilder part and impinging free shear layer instability | |||||
著者 |
高橋, 秀行
× 高橋, 秀行× 塩谷, 幸信× 水島, 二郎× Takahashi, Hideyuki× Shiotani, Yukinobu× Mizushima, Jiro |
|||||
著者所属 | ||||||
同志社大学 工学部 機械システム工学科 | ||||||
著者所属 | ||||||
同志社大学 工学部 機械システム工学科 | ||||||
著者所属 | ||||||
同志社大学 工学部 機械システム工学科 | ||||||
著者所属(英) | ||||||
en | ||||||
Doshisya University Department of Mechanical Engineering, Faculty of Engineering | ||||||
著者所属(英) | ||||||
en | ||||||
Doshisya University Department of Mechanical Engineering, Faculty of Engineering | ||||||
著者所属(英) | ||||||
en | ||||||
Doshisya 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 en : Special Publicationa of National Aerospace Laboratory 巻 43, p. 69-74, 発行日 1999-11 |
|||||
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 Oct. 1998 (23th). 24-26 Mar. 1999 (24th) 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 Oct. 1998 (23th). 24-26 Mar. 1999 (24th) Tokyo Japan | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 対称な急拡大・縮小管路流れの遷移と不安定性について異なる3つの方法で数値的に調べた。すなわち、動的方程式の時間前進法、SOR(逐次過大緩和法)による逐次法、定常状態方程式に対する有限要素法を用いた。得られた数値に対して、分岐法を用いて解析を行った。また線形安定性理論、および弱非線形安定性理論を流れの解に対して応用した。流れの解は低レイノルズ数の場合、安定かつ対称であるが、臨界のレイノルズ数で非対称となり、次の臨界レイノルズ数で再び対称となり、非常に大きなレイノルズ数で振動するようになる。多重安定定常解が、いくつかの場合に得られた。またこの多重安定解が存在するパラメータ領域を求めた。衝撃自由剪断層不安定性が流れの振動を生じさせることが分かり、衝撃自由剪断層不安定性の発生の機構が明らかとなった。 | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Transitions and instabilities of flow in symmetric channel with a suddenly expanded and contracted part are investigated numerically by three different methods, i.e., the time marching method for dynamical equations, the SOR (Successive Over Relaxation) iterative method and finite element method for steady state equations. Numerical results are analyzed by using the bifurcation theory. Linear and weakly nonlinear stability theories are also applied to the flow. It is known that the flow is steady and symmetric at low Reynolds numbers, becomes asymmetric at a critical Reynolds number, gets the symmetry back at another critical Reynolds number and then becomes oscillatory at very high Reynolds numbers. Multiple stable steady solutions are found in some cases and the parameter range of existence of the multiple stable solutions is obtained. Impinging free shear layer instabilities are found to cause the flow oscillations and the mechanism of the impinging free shear layer instability is clarified. | |||||
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: AA0001960021 | |||||
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-43 |