Solid-Like Behavior of Concentrated Particulate Suspensions under Squeezing Flow
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概要
- 論文の詳細を見る
We have examined the solid-like behavior of concentrated suspensions with non-Brownian particles in squeezing film flows. The apparent yield stress has been estimated with a very weak squeezing flow between a flat plate and a spherical surface with a large radius of curvature. This instrument allowed us to explore the effect of repeated squeeze flow on these materials. It was found that there was a dramatic increase in solid-like properties as the number of cycles grew, especially for the higher volume fraction samples. This growth appeared to be accelerated if we used irregularly shaped particles, slower squeeze velocities, smaller final gap values or plates with a rougher surface. The fact that this occurred in cyclic squeeze flow, and did not occur in a corresponding cyclic shear flow, suggests that the highly non-uniform nature of the flow field in squeezing contributes to this behavior. Indeed, we suggest that there is a gradual build-up over many cycles of aggregates in the central region which leads to this behavior.
- 一般社団法人 日本レオロジー学会の論文
著者
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Satou Fumio
Department Of Cardiology Surugadai Nihon Univ.hospital
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See H
Department Of Mechanical And Mechatronic Engineering The University Of Sydney
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See Howard
シドニー大工
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See Howard
Department Of Applied Physics Faculty Of Engineering Nagoya University
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HASEGAWA Tomiichi
Department of Mechanical and Production Engineering, Faculty of Engineering, Niigata University
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NARUMI Takatsune
Department of Mechanical and Production Engineering, Faculty of Engineering, Niigata University
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Oumi Yousuke
Department of Mechanical and Production Engineering, Faculty of Engineering, Niigata University
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Hasegawa Tomiichi
Department Of Mechanical And Production Engineering Faculty Of Engineering Niigata University
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Oumi Yousuke
Department Of Mechanical And Production Engineering Faculty Of Engineering Niigata University
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Narumi T
Mechanical And Production Engineering Faculty Of Engineering Niigata University
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Narumi Takatsune
Department Of Mechanical And Production Engineering Faculty Of Engineering Niigata University
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