2012 マルチスケール格子ボルツマン法を用いた高レイノルズ数流れ場の数値解析(G05-6 流体工学(6)数値流体解析,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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LBM(Lattice Boltzmann Method) was applied to a simulation of the flow around a. low-pressure turbine airfoil. LBM has several advantages like fast caluculation , easy-to-parallelize, and relatively low computational cost, however sometimes faces some problems in applicating it to realistic situation such as turbomachinery flow. It is because a lot of grid points are required to avoid numerical instability due to small relaxation parameter in high Reynolds number flow. In addition, it is difficult for conventional LBM to deal with the flow around bodies with arbitray shape. In the present study, the multi-scale model and immersed boundary method are introduced to overcome those problems. The results are compared with the experiment done by Iwate University.
社団法人日本機械学会の論文
2008-08-02