Article
  • Numerical Study of Various Shape Aggregations of Carbon Black in Suspension with Shear Flow
  • Gu Kim , Jun Fukai, and Shuji Hironaka

  • Department of Chemical Engineering, Faculty of Engineering, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan

  • 전단 유동이 적용된 서스펜션 내부의 형태별 카본 블랙에 대한 수치 연구
Abstract

Aggregates of carbon black with various shapes in a suspension were investigated to understand their behavior in fluid flow. At a lower aspect ratio, the particles exhibited tumbling or rotational motion, and the fluid flow was deflected in regions where the density of particles was higher. The contact between the particles promoted partial particle grouping when the aspect ratios of the particles were low. The average transitional motion of the particles was greatest at the lowest aspect ratio case. This led to weaker rearrangement event than those when the particles were nearly spherical. The elongated particles could act as bridges to promote the formation of particle groups. We believe that our study provides insight for suspensions containing particles with various shapes, which can be used to control the suspensions rheologically.


Keywords: non-Newtonian flow, aggregate, suspension, shear flow, lattice Boltzmann method

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2019; 43(5): 741-749

    Published online Sep 25, 2019

  • 10.7317/pk.2019.43.5.741
  • Received on May 5, 2019
  • Revised on Jun 11, 2019
  • Accepted on Jul 21, 2019

Correspondence to

  • Gu Kim
  • Department of Chemical Engineering, Faculty of Engineering, Kyushu University

  • E-mail: g.kim@kyudai.jp