高分子液晶のレオロジーの数値解析 : 第4報,配向挙動に及ぼす磁場の影響(流体工学,流体機械)

概要

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Computational investigation of the effect of magnetic fields on the molecular orientation of polymeric liquid crystals under shear flow is achieved using the Doi theory. The evolution equation of orientational distribution function of molecules is directly solved without closure approximations. When a magnetic field is imposed, a new aligning region emerges in low shear rates. The new region becomes wider with increasing the magnetic field intensity, resulting in the reduction of a tumbling region and finally in only an aligning region. Imposition of magnetic fields in tumbling and wagging regions leads to the transition to an aligning region, where most of molecules are considered to be stationary, so that the high order parameter of the system is expected. When magnetic fields are imposed in an aligning region, on the other hand, a slight improvement of the order parameter is obtained.
一般社団法人日本機械学会の論文
2005-10-25