水平管内流における固体粒子と気流の乱れの相互作用 : 粗粒子・微粒子の混合の影響

概要

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The influence of the multi-dispersed particles on the turbulence of air flow was examined by the use of a P.D.V. (Phase Doppler Anemometry) in a horizontal pipeline with inside diameter of 80mm. The mean diameters of glass beads are 54.6μm and 468.0μm, respectively and both densities are 2590kg/m^3. It was found that the presence of fine particles suppressed the turbulence of air flow and it was predicted that the most effective mass flow rate ratio for that suppression existed. It is noteworthy that the turbulence of air flow in the case that a little of coarse particles mixed into the fine particles is more promotive than that in the case of coarse particles alone. Furthermore, it was found that the accelerative pressure loss in that case was larger than that in the case of the monodispersed particles.
社団法人日本機械学会の論文
2000-04-25