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Chin. Phys. B, 2012, Vol. 21(12): 126601    DOI: 10.1088/1674-1056/21/12/126601

Modeling effective viscosity reduction behaviour of solid suspensions

Wei En-Boa, Ji Yan-Jua b, Zhang Junc
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
Abstract  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.
Keywords:  effective viscosity      solid suspensions      transformation field method  
Received:  20 March 2012      Revised:  08 May 2012      Published:  01 November 2012
PACS:  66.20.-d (Viscosity of liquids; diffusive momentum transport)  
  66.20.Cy (Theory and modeling of viscosity and rheological properties, including computer simulation)  
  64.70.D- (Solid-liquid transitions)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 40876094 and 10374026).
Corresponding Authors:  Wei En-Bo     E-mail:

Cite this article: 

Wei En-Bo, Ji Yan-Ju, Zhang Jun Modeling effective viscosity reduction behaviour of solid suspensions 2012 Chin. Phys. B 21 126601

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