回転球面上の減衰性２次元乱流からのパターン形成

• 石岡 圭一

  東大・数理

• 山田 道夫

  東大・数理

• 林 祥介

  北大・理

• 余田 成男

  京大・理

書誌事項

タイトル別名

• Pattern Formation from Two-dimensional Decaying Turbulence on a Rotating Sphere.

抄録

Time-evolutions of decaying turbulence in two-dimensional non-divergent fluid on a rotating sphere were conducted with high-resolution numerical model to examine what stream pattern appears finally.<BR>To investigate the condition needed for each pattern to appear in detail, higher-resolution model are used and wider parameter range of initial condition or angular velocity of sphere rotation are swept than other past researches on the same subject.<BR>As a result, it is confirmed that the appearance of easterly polar vortex when the angular velocity of sphere rotation is rapid is a robust feature. Furthermore, it turned out to be necessary for band structure of zonal flow to appear in middle and low latitudes that initial energy must be injected into small scale enough as well as the angular velocity of sphere rotation is rapid.

収録刊行物

• 日本流体力学会誌「ながれ」

  日本流体力学会誌「ながれ」 18 (6), 410-411, 1999

  社団法人 日本流体力学会

詳細情報

• CRID: 1390282679671969280
• NII論文ID: 130004005603
• DOI: 10.11426/nagare1982.18.410
• ISSN: 21854912
• ISSN: 02863154
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可