1345 乱流曲りチャネル内粒子と流体の相互作用の数値解析

概要

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Direct numerical simulations (DNS) of particle-laden curved turbulent channel flows at the Reynolds number 2990 based on centerline mean velocity and the channel half-width H and mild curvature (H/r_c=0.0127) on a 128×64×128 grid were p4erormed using the finite difference method (FDM). Particles were traced using the deterministic method combined with the direct particle interactions via hard-sphere collisions and two-way coupling. Particle volume fractions from O ((10)^<-6>) to O((10)^<-5>) were considered. Special particle structures near the wall are formed. Particles have significantly affected the structures of Taylor-Goertler vortices. It is also found that the turbulence structures near the wall are modified due to local particle concentration.
一般社団法人日本機械学会の論文
2002-09-20