懸濁液の円管内流れにおける抵抗減少効果

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書誌事項

タイトル別名
  • Drag Reduction in Liquid-Solid Suspension Flow in Pipes
  • (Velocity Profiles that are predicted by Pressure Loss Data)
  • （圧力損失の測定値から予測される速度分布）

抄録

<p>It is well known that drag reduction properties of polymer solutions in pipe flows are classified into two categories, based on the relationship between the friction factor and the Reynolds number. The degree of drag reduction either increases with an increase in the Reynolds number, or is independent of the Reynolds number. In the latter case, the drag reduction behavior is referred to as Type-B behavior. In this study, the pressure losses of aqueous suspensions of bio-fibers and graphene oxide flat particles in pipe flows were measured to clarify the effect of the shape of suspended fine solid matter on the friction factor. The experimental results demonstrated that the behavior of the friction factor corresponded with the Type-B behavior of the drag reduction. The mean velocity profile in the range of the turbulent flow was calculated using the friction factor data.</p>

収録刊行物

  • 年次大会

    年次大会 2020 (0), S05304-, 2020

    一般社団法人 日本機械学会

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