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A variation of the Riemann problem solution and its application to implicit Godunov's scheme
https://jaxa.repo.nii.ac.jp/records/37848
https://jaxa.repo.nii.ac.jp/records/37848981956b8-c3c1-42e5-81d7-2d6e6a389494
名前 / ファイル | ライセンス | アクション |
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nalsp0027011.pdf (563.5 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 | ||||||
言語 | en | |||||
タイトル | A variation of the Riemann problem solution and its application to implicit Godunov's scheme | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | リーマン問題 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 陰的ゴドノフ解法 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | CFL数 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Courant Friedlich Levy数 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 衝撃波解像度 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 流体力学的不連続 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | カーバンクル現象 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 数値的不安定 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | CFDコード | |||||
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 | 超音速流れ | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 極超音速流れ | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 鈍頭物体 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 物体の周りの流れ | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Riemann problem | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | implicit Godunov scheme | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | CFL number | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Courant Friedlich Levy number | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | shock wave resolution | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | fluid dynamical discontinuity | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | carbuncle phenomenon | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | numerical instability | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | CFD code | |||||
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 | supersonic flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | hypersonic flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | blunt body | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | flow around body | |||||
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 | ||||||
その他のタイトル | リーマン問題の厳密角の変動および陰的ゴドノフスキームへの適用 | |||||
著者 |
Menshov, I
× Menshov, I× 中村, 佳朗× Menshov, Igor× Nakamura, Yoshiaki |
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著者所属 | ||||||
名古屋大学 工学部 航空学科 | ||||||
著者所属 | ||||||
名古屋大学 工学部 航空学科 | ||||||
著者所属(英) | ||||||
en | ||||||
Nagoya University Department of Aeronautical Engineering, Faculty of Engineering | ||||||
著者所属(英) | ||||||
en | ||||||
Nagoya University Department of Aeronautical 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 Publication of National Aerospace Laboratory 巻 27, p. 105-110, 発行日 1994-12 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | リーマン問題の厳密解の初期値に対する変動を調べる。この変動は、変動マトリクス(VM)を初期不連続の対応する側と結びつけて導入することにより線形形式で書くことができる。厳密解に対するVMを任意の初期データに対して陽な形で与えることができることを示した。これを陰的ゴドノフスキームに適用することにより、LU差分因子近似分解法を利用して、前進と後退の2回の緩和計算で解くことができるようなdelta形式の線形系が導かれる。そのような方法で得られたスキームの利点は、純頭物体のまわりの超音速・極超音速流れを計算するときにCFL条件数が大きくとれることである。 | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The present paper is devoted to investigate a variation of the exact Riemann Problem (RP) solution with respect to a variation of the initial data. This variation may be written in the linear form by introducing Variation Matrices (VM) coupled with the corresponding side of initial discontinuity. It is shown that VM for the exact RP solution can be obtained in the explicit form for any initial data. Its application to the implicit Godunov scheme leads to the linear system of equations in delta-form which is solved in two relaxation sweeps, backward and forward ones, by implementing Lower-Upper (LU) approximate factorization. The advantage of the scheme obtained in such a way is large Courant-Friedrichs-Lewy (CFL) number in calculating of super- and hypersonic flows around blunt body. | |||||
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: AA0004174011 | |||||
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-27 |