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

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Modeling effective viscosity reduction behaviour of solid suspensions

魏恩泊a, 纪艳菊a b, 张军c   

  1. 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
  • 收稿日期:2012-03-20 修回日期:2012-05-08 出版日期:2012-11-01 发布日期:2012-11-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 40876094 and 10374026).

Modeling effective viscosity reduction behaviour of solid suspensions

Wei En-Bo (魏恩泊)a, Ji Yan-Ju (纪艳菊)a b, Zhang Jun (张军)c   

  1. 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
  • Received:2012-03-20 Revised:2012-05-08 Online:2012-11-01 Published:2012-11-01
  • Contact: Wei En-Bo E-mail:ebwei@qdio.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 40876094 and 10374026).

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摘要： 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.

关键词: effective viscosity, solid suspensions, transformation field method

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.

Key words: effective viscosity, solid suspensions, transformation field method

中图分类号:  (Viscosity of liquids; diffusive momentum transport)

  • 66.20.-d
66.20.Cy (Theory and modeling of viscosity and rheological properties, including computer simulation) 64.70.D- (Solid-liquid transitions)