Development of an Advanced Turbulence Model for Unsteady Complex Turbulent Flow Fields Considering the Characteristics of Near-Wall Turbulent Vortex Structures

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560197
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: Kyushu University
• Principal Investigator: ABE Ken-ichi 九州大学, 工学(系)研究科(研究院), 教授 (20315104)
• Project Period (FY): 2012-04-01 – 2015-03-31
• 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

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.

Free Research Field

乱流工学