E-114 空間発達する温度成層境界層の乱流構造に関する LES 解析 : 対流境界層の場合

概要

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In this research, in order to generate the inflow turbulence, the turbulence parameters for velocities at recycle station are rescaled and introduced to the inlet boundary, while temperature is treated as a passive scalar. The generated inflow data for temperature as well as velocities are introduced into the main computational domain, where temperature is solved taking into consideration buoyancy effects. With this method, a long fetch is not necessary to simulate the spatially-developing boundary layer. We carry out LES analysis of the spatially-developing thermally stratified turbulent boundary layers. We at first apply Lund's method to generate the inflow turbulence for stratified turbulent boundary layer. By using the generated inflow data, we can simulate the spatially-developing thermally stratified turbulent boundary layers, and investigate the turbulence structure inside them.
日本流体力学会の論文
2003-07-28