211 格子ボルツマン法の剥離を伴うターボ機械流れへの適用(S37-1 CFDの新展開(1),S37 CFDの新展開)  [in Japanese] 211 Application of LBM to Separated Flow in Turbomachinery  [in Japanese]

The present work is an attempt to apply Lattice Boltzmann Method (LBM) to simulation of the separated flow in turbomachinery. The test model, with a semi-circular leading edge and two flat plates, was used to investigate the details of separation/reattachment of boundary layer seen in turbomachinery. The result of LBM was compared with those of experiment and LES. In both LBM and LES, the separation bubble was overestimated compared with that in experiment. However, the separation bubble in LBM result was smaller than in LES, although both schemes have same-order accuracy in space, and was close to the experimental one.