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titleHybrid格子を用いた点緩和型陰的Discontinuous Galerkin法の検討
Other TitleStudy of pointwise implicit Discontinuous Galerkin method for hybrid grids
Author(jpn)保江 かな子; 澤田 恵介
Author(eng)Yasue, Kanako; Sawada, Keisuke
Author Affiliation(jpn)東北大学 大学院工学研究科; 東北大学 大学院工学研究科
Author Affiliation(eng)Tohoku University Graduate School of Engineering; Tohoku University Graduate School of Engineering
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 page62
End page67
Publication date2008-02-29
AbstractA pointwise relaxation implicit Discontinuous Galerkin (DG) method developed in our study is extended to unstructured hybrid grids comprised of hexahedral, pyramidal, prismatic and tetrahedral cells. The mathematical formulation of the present method is first shown. The scalar advective equation in 3D space is then solved using hybrid grid. The accuracy of the scheme as well as the convergence rate is examined for illustrating the characteristics of the present numerical method. Finally, the pointwise relaxation implicit DG method for 3D Euler equations is constructed to solve inviscid compressible flowfield over ONERA-M6 isolated wing using hybrid mesh systems.
DescriptionJAXA Special Publication
Keywordscomputational fluid dynamics; grid generation; unstructured grid; accuracy; convergence; degree of freedom; Galerkin method; Euler equation of motion; compressible flow; inviscid flow; hybrid grid; 計算流体力学; 格子生成; 非構造格子; 精度; 収束; 自由度; ガラーキン法; オイラー運動方程式; 圧縮性流れ; 非粘性流; 混成格子
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-07-016

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