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Other TitleGeneration of flow field with arbitrarily given vorticity for finite difference method on structured mesh
Author(jpn)名古屋 靖一郎; 高橋 匡康; 相曽 秀昭; 岸 恭子
Author(eng)Nagoya, Seiichiro; Takahashi, Tadayasu; Aiso, Hideaki; Kishi, Kyoko
Author Affiliation(jpn)アーク情報システム; 宇宙航空研究開発機構; 宇宙航空研究開発機構; 宇宙航空研究開発機構
Author Affiliation(eng)Arc Information Systems Inc.; Japan Aerospace Exploration Agency; Japan Aerospace Exploration Agency; Japan Aerospace Exploration Agency
Issue Date2008-02-29
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication title第39回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2007論文集
Proceedings of 39th Fluid Dynamics Conference/Aerospace Numerical Simulation Symposium 2007
Start page81
End page86
Publication date2008-02-29
AbstractWe propose a technique to generate flow field with arbitrarily given vorticity for finite difference method on the staggered structured mesh, and it is based on the conjugate gradient method defined on the structured mesh naturally. Since the linear system of rotation operator is degenerate, the matrix is ill-condition. For the pre-condition of conjugate gradient method, the Balancing Domain Decomposition method is employed. Since the subspace of the kernel of rotation, i.e. balancing space, is known as the scalar potential velocity field, we solve the discretized Poisson-like equation with the Shur complement to eliminate the degenerate components.
DescriptionJAXA Special Publication
Keywordsfinite difference method; flow distribution; vorticity; discretization; structured grid; grid generation; algorithm; conjugate gradient method; Poisson equation; 有限差分法; 流れの分布; 渦度; 離散化; 構造格子; 格子生成; アルゴリズム; 共役勾配法; ポアソン方程式
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-07-016

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