Analysis of Rheology of Fiber Suspensions by the Particle Simulation Method

Satoru Yamamoto, Takaaki Matsuoka

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)95-101
Number of pages7
JournalNihon Reoroji Gakkaishi
Volume23
Issue number2
DOIs
Publication statusPublished - Jan 1 1995
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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