Dynamic simulation of microstructure and rheology of fiber suspensions

Satoru Yamamoto, Takaaki Matsuoka

研究成果: Contribution to journalArticle査読

37 被引用数 (Scopus)


A numerical simulation method has been developed to predict the motion of fiber suspensions in various flows by using the particle simulation method (PSM), in which a fiber is modeled by an array of spheres. The hydrodynamic interaction among fibers is considered by decomposing into Intra-fiber and inter-fiber interactions. For the intra-fiber case, 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. For the inter-fiber case, only the near-field lubrication force is considered between spheres belonging to different fibers. The methodology was applied to predicting the microstructure and rheological properties of rigid fiber suspensions in simple shear flow and fiber orientation in two-dimensional diverging flow by combining this method with the finite element method (FEM). In the former, the overshoot of suspension viscosity, due to the transient change of the microstructure, was observed in semi-dilute to concentrated systems. In the latter, the calculated fiber orientations agreed with expectations of theory.

ジャーナルPolymer Engineering and Science
出版ステータス出版済み - 1 1 1996

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • ポリマーおよびプラスチック
  • 材料化学


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