E225 自然風を模擬した変動流入下での立方体構造物まわりの乱流数値解析 : SRI の実測結果との風圧力の比較

概要

論文の詳細を見る
This paper discusses the applicability of numerical simulation to turbulent flows around a cube in an atmospheric boundary layer flow. In order to generate the data of natural wind, turbulent inflows are generated using the method with quasi-periodic boundary conditions and rectangular blocks, which function as roughness. The computed turbulent boundary layer, whose wind profile sets to the power law with exponent α=0.16,was compared with full-scale measurements by Silsoe Research Institute (SRI), and has good agreement. A flow around a cube in a turbulent boundary layer was computed using thus generated inflow turbulence. The pressure coefficients on the surface of a cube along the centerline are more negative than full-scale results, because the mean reattachment point on the roof was different. Unsolved problem remains for the function of integral scales of turbulent quantities which influences mean reattachment point.
日本流体力学会の論文
2002-07-23