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titleHR-SLAU2 および HR-AUSM(+) -up: 高解像度非定常空力シミュレーションに向けて
Other TitleHR-SLAU2 and HR-AUSM(+)-up towards High Resolution Unsteady Aerodynamic Simulations
Author(jpn)北村, 圭一; 橋本, 敦
Author(eng)Kitamura, Keiichi; Hashimoto, Atsushi
Author Affiliation(jpn)名古屋大学; 宇宙航空研究開発機構(JAXA)
Author Affiliation(eng)Nagoya University; Japan Aerospace Exploration Agency (JAXA)
Issue Date2015-03-25
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料: 第46回流体力学講演会/第32回航空宇宙数値シミュレーション技術シンポジウム論文集
JAXA special publication: Proceedings of the 46th Fluid Dynamics Conference / 32nd Aerospace Numerical Simulation Symposium
Start page99
End page104
Publication date2015-03-25
AbstractThe reduced dissipation approach has been applied to AUSM-family flux functions of SLAU2 and AUSM(+)-up towards high resolution transonic buffet simulations on unstructured grids. In this approach, the dissipation term (of the pressure flux) in each flux function is locally controlled (0 < γHR < 1, γHR: dissipation coefficient) where a cell-interface orientation angle is small (i.e., cell geometry is nearly squared) and/or where flows are smooth, and the original methods are recovered otherwise (γHR =1). Numerical tests demonstrated that the proposed HR (High-Resolution) -SLAU2 achieved better resolution (while maintaining robustness) for a double shear layer problem (Mach 0.01) and decaying isotropic turbulence (Mach 6×10(exp(-4)), compared with the original counterparts (γHR =1) or an existing method (HR-Roe), whereas HR-AUSM(+)-up showed degraded resolution due to a large cutoff Mach number required for a stability reason.
Description会議情報: 第46回流体力学講演会/第32回航空宇宙数値シミュレーション技術シンポジウム (2014年7月3日-4日. 弘前文化センター), 弘前市, 青森県
形態: カラー図版あり
Meeting Information: 46th Fluid Dynamics Conference / 32nd Aerospace Numerical Simulation Symposium (July 3-4, 2014. Hirosaki Bunka Center), Hirosaki, Aomori, Japan
Physical characteristics: Original contains color illustrations
Document TypeConference Paper
JAXA Category特別資料
NASA Subject CategoryFluid Mechanics and Thermodynamics
Report NoJAXA-SP-14-010

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