Normal Stress Effect and Sphere Drag of Water/Fine Solid Particle Suspension.
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概要
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It is known that dilute carbon black suspensions cause the drag reduction for flow around a sphere at Re>1.5×10<SUP>5</SUP>. In this study, the experiment was carried out to measure the first normal differences of water/fine solid particle suspensions which the suspended particle is about 1.3μm in diameter by using the cone-and-plate rheogoniometer. The experimental data of carbon black suspensions show the viscoelastic behavior. By extrapolating the value of the first normal stress differences, it was pointed out that the drag reduction is occurred by the viscoelastic effect of the dilute suspensions.
- 一般社団法人 日本機械学会の論文
一般社団法人 日本機械学会 | 論文
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