大振動変形を受ける粒子分散系粘弾性流体の応答挙動(反応・多相系非ニュートン,一般講演)

概要

論文の詳細を見る
We have investigated response of concentrated suspension of non-Brownian spheres dispersed in viscoelastic carrier liquids under large amplitude oscillatory shear flows. The viscoelastic suspensions have showed similar transient responses after each reversal in the shearing direction to those observed with Newtonian carrier liquids. But, fluidity in the transient periods was lower than that of the Newtonian cases. It was thought that rearrangements in the particulate microstructure could account for this transient response. In the first stage of the rearrangements, the effect of elastic recoil increase the fluidity, but the viscoelasticity of the carrier liquids resisted the microstructural rearrangement in the latter half stage. Moreover, the influence of the viscoelasticity was almost disappeared in the case of higher volume fraction.
日本流体力学会の論文
2009-09-02