Dynamic SGSモデルを用いたGSMAC有限要素法による平行平板間乱流のLES(液体工学,液体機械)

The purpose of our study is to analyze the engineeringly turbulent flows. In these case, LES (Large Eddy Simulation) is expected to be the most effective method. Since three dimensional unsteady calculation is carried out in LES, it is possible to understand the flow visually using computer graphic system and to offer useful information. In order to achieve the purpose, it is necessary to analyze the benchmark problem and to show the effectiveness in the first step. In this paper, a turbulent channel flow at Reτ = 360 based on the friction velocity uτ and channel width δ is analyzed using the Dynamic Smagorinsky model with GSMAC (Generalized Simplified Marker and Cell) FEM. In order to confirm its effectiveness, numerical results are compared with the DNS data and other results and the present scheme is verified.