空間発達型乱流境界層 LES の都市域強風への適用性 : 乱れ特性の対応に関する検討

概要

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In this paper, the method of generating a turbulent boundary layer over rough wall, which has been proposed by authors, was verified by the turbulent characteristics to be put to practical use. Integral scales of turbulence and spectra of streamwise velocity fluctuations were investigated to be influenced by the size of computational domain and the length of the periodic zone. The influence of the length of the periodic zone could be seen in a higher part of the boundary layer. To check the influence of Reynolds number between the atmospheric boundary layer and the numerically simulated boundary layer, we modified the method to apply the model in the vicinity of the wall. We could not see the difference between the high and low Reynolds number simulation, except the mean velocity profile in the roughness layer.
社団法人日本建築学会の論文
2002-04-30