D223 粒径分布を考慮した k-ε 乱流モデルによる地吹雪の流動解析

概要

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In cases of solid-gas two-phase flows, the turbulent structure varies with the density profile caused by the concentration of solid particles. In many cases, solid particles are not uniform and have the size distribution. This study treats the suspension flow as the non-Boussinesq fluid where the density difference from the density of gas is considerably large. Also the model takes into account the size distribution of snow particles. The experiments on snow drift were carried out using the low temperature wind tunnel at Shinjo Branch of NIED. The numerical results explain well the profiles of the wind velocity and the snow particle flux obtained in the experiments. The snow particle flux profile near bed is strongly affected by the diameter of snow particles
日本流体力学会の論文
2000-07-25