2024-03-29T13:48:32Z
https://niigata-u.repo.nii.ac.jp/oai
oai:niigata-u.repo.nii.ac.jp:00003744
2022-12-15T03:36:50Z
423:424:425
453:454
Experiments on the Reverse Squeezing Flow of Dilute Polymer Solutions : 2nd Report, Water-Separan Solutions
希薄高分子溶液の逆スクイズ流れに関する実験的研究(第2報, Separan水溶液の場合)
希薄高分子溶液の逆スクイズ流れに関する実験的研究(第2報, Separan水溶液の場合)
鳴海, 敬倫
45084
細川, 喜弘
45085
長谷川, 富市
45086
近野, 正昭
45087
Viseoelastic Fluid
Non-Newtonian Fluid
Unsteady Flow
Dilute Polymer Solution
Reverse Squeezing Flow
Squeezing Flow
Experiments have been conducted with dilute water-Separan solutions on the reverse squeezing flow between a flat plate and a spherical surface of a large radius of curvature. The separating motion is started from a stationary and contacting state by applying constant forces. The separating rate in the polymer solutions is compared with that predicted by power law fluids. At the beginning of the motion, the separating rates in the Separan solutions are smaller than those in the inelastic liquids, as was shown in the 1st report for PEO solutions. These results cannot be explained by ordinary continuum mechanics because of the very small clearance between two surfaces ion the center region where the molecular size is close to the clearance size. When the separation is increased in magnitude, a considerable difference is shown between the results of Separan and PEO solutions despite similar viscoelastic properties in steady flows. Namely, the separating rates in the PEO solutions are close to those in the inelastic liquid, while smaller rates are maintained in the case of Separan solutions. It is considered that these results are due to the difference between the unsteady viscoelastic properties, stress overshoot, for example, of two different polymer solutions.
journal article
日本機械学会
1989-12
application/pdf
日本機械学会論文集. B編
520
55
3691
3696
日本機械学会論文集. B編
AN00187441
03875016
https://niigata-u.repo.nii.ac.jp/record/3744/files/9_0026.pdf
jpn
http://ci.nii.ac.jp/naid/110002402034
日本機械学会
本文データは学会の許諾に基づくCiNiiからの複製である