Analysis of Rheology of Fiber Suspensions by the Particle Simulation Method

Satoru Yamamoto, Takaaki Matsuoka

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

A numerical simulation method has been developed to predict the rheological behavior of fiber suspensions in shear flow by using the particle simulation method (PSM), in which a fiber is modeled by arrays of spheres. The hydrodynamic interaction among fibers is considered by decomposing into intra- and inter-fiber ones. In the former, the many-body problem is solved by calculating the mobility matrix for each fiber to obtain the hydrodynamic force and torque exerted on each sphere. In the latter, only the near-field lubrication force is considered between spheres belonging to different fibers. The methodology was applied to predict the microstructure and the rheological properties of suspensions of rigid fibers with aspect rations 5 and 10 at several cancentrations. The overshoot of suspension viscosity due to the transient change from random to planar orientation in the microstructure was observed in semi-dilute to concentrated regimes.

本文言語英語
ページ(範囲)95-101
ページ数7
ジャーナルNihon Reoroji Gakkaishi
23
2
DOI
出版ステータス出版済み - 1995
外部発表はい

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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