Development of an Advanced Turbulence Model for Unsteady Complex Turbulent Flow Fields Considering the Characteristics of Near-Wall Turbulent Vortex Structures
| Project/Area Number |
24560197
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
ABE Ken-ichi 九州大学, 工学(系)研究科(研究院), 教授 (20315104)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 数値流体力学 / 乱流モデリング / ラージ・エディ・シミュレーション / LES/RANSハイブリッドモデル / 非等方ＳＧＳモデル |
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| Outline of Final Research Achievements |
An improved subgrid-scale (SGS) model was proposed by combining an isotropic linear eddy-viscosity term with an extra anisotropic term. This model has no serious negative effects on the computational stability under coarse grid conditions. Furthermore, using this SGS model, the present LES/RANS model can successfully cover a much wider range of flow domain by LES compared with the model previously proposed by our group.
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Report
(4 results)
Research Products
(13 results)
