連続モデルに由来しない離散モデルの不安定性:カーバンクル不安定性

• 相曽, 秀昭

• Abouziarov, Moustafa

• 高橋, 匡康

• Aiso, Hideaki

• Takahashi, Tadayasu

書誌事項

タイトル別名

• Carbuncle instability, which does not come from the original continuous model

抄録

The Carbuncle phenomenon, one of the well known instability phenomena is considered that happen in numerical computations for the compressible Euler equations. This phenomenon is often discussed from the viewpoint how to eliminate or reduce the instability. But the discussion on the phenomenon itself has not yet been done enough. It is tried here to discuss the reason why the instability occurs, especially the machinery of growth of instability. The analysis gives an approximate formula that explains the growth of carbuncle instability in the case of Godunov method. Also given are some numerical experiments showing that the formula has a good coincidence with the growth of real carbuncle phenomenon in a computation for progressing planar shock wave.

資料番号: AA0047427027

レポート番号: JAXA-SP-03-002

収録刊行物

• 宇宙航空研究開発機構特別資料: 航空宇宙数値シミュレーション技術シンポジウム2003論文集 = JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2003

  宇宙航空研究開発機構特別資料: 航空宇宙数値シミュレーション技術シンポジウム2003論文集 = JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2003 JAXA-SP-03-002 148-153, 2004-03-25

  宇宙航空研究開発機構

キーワード

• カーバンクル不安定性
• 数値解析
• 圧縮製性流れ
• Euler運動方程式
• 衝撃波
• 鈍頭物体
• 超音速流
• CFD
• Carbuncle instability
• numerical analysis
• compressible flow
• Euler equation of motion
• shock wave
• blunt body
• supersonic flow

詳細情報

• CRID: 1050011086271324544
• NII論文ID: 120006829776
• NII書誌ID: AA11984031
• ISSN: 1349113X
• Web Site: http://id.nii.ac.jp/1696/00006622/
• 本文言語コード: ja
• 資料種別: conference paper
• データソース種別:
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  • CiNii Articles
  • KAKEN