Modeling effective viscosity reduction behaviour of solid suspensions

Under a simple shearing flow, the effective viscosity of solid suspensions can be reduced by controlling the inclusion particle size or the number of inclusion particles in a unit volume. Based on the Stokes equation, the transformation field method is used to model the reduction behaviour of effect...

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Published inChinese physics B Vol. 21; no. 12; pp. 377 - 382
Main Author 魏恩泊 纪艳菊 张军
Format Journal Article
LanguageEnglish
Published 01.12.2012
Subjects
Computational fluid dynamics
Inclusions
Mathematical analysis
Particle size
Reduction
Shearing
Solid suspensions
Stokes方程
Transformations
Viscosity
低粘度
固体悬浮物
夹杂物
建模
悬浮液
行为
颗粒尺寸
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Summary:Under a simple shearing flow, the effective viscosity of solid suspensions can be reduced by controlling the inclusion particle size or the number of inclusion particles in a unit volume. Based on the Stokes equation, the transformation field method is used to model the reduction behaviour of effective viscosity of solid suspensions theoretically by enlarging the particle size at a given high concentration of particles. With a lot of samples of random cubic particles in a unit cell, our statistical results show that at the same higher concentration, the effective viscosity of solid suspensions can be reduced by increasing the particle size or reducing the number of inclusion particles in a unit volume. This work discloses the viscosity reduction mechanism of increasing particle size, which is observed experimentally.
Bibliography:effective viscosity, solid suspensions, transformation field method
Under a simple shearing flow, the effective viscosity of solid suspensions can be reduced by controlling the inclusion particle size or the number of inclusion particles in a unit volume. Based on the Stokes equation, the transformation field method is used to model the reduction behaviour of effective viscosity of solid suspensions theoretically by enlarging the particle size at a given high concentration of particles. With a lot of samples of random cubic particles in a unit cell, our statistical results show that at the same higher concentration, the effective viscosity of solid suspensions can be reduced by increasing the particle size or reducing the number of inclusion particles in a unit volume. This work discloses the viscosity reduction mechanism of increasing particle size, which is observed experimentally.
11-5639/O4
Wei En-Bo, Ji Yan-Ju, and Zhang Jun a） Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China b） Graduate University of Chinese Academy of Sciences, Beijing 100049, China c） The Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/21/12/126601