The Effect of Interaction of Rodlike Particles in Semi-Dilute Suspensions under Shear Flow

概要

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A computer simulation is carried out for the motion of many rodlike particles suspended in a Newtonian fluid subject to a shear flow. It is based on a model which takes into account the short range part of the hydrodynamic interaction between the rods only and neglect the long range part. The simulation is done for both wall bounded systems and unbounded systems. It is found that (i) the rotational motion of the rodlike particle becomes chaotic due to the hydrodynamic interaction and the Folgar-Tucker constant which characterizes the chaotic motion increases linearly with the concentration, (ii) the average period of the rotational motion increases with concentration in agreement with experiments of Stover et al. , and (iii) the rods near the wall are aligned towards the vorticity.
社団法人日本物理学会の論文
1995-09-15