分散系ER流体の平行平板間流れにおける分子動力学シミュレーション(流体工学,流体機械)

抄録

Molecular dynamics-like simulation of ER fluid flow is carried out to investigate the particle behavior and its influence on the flow between the parallel plates. The flow field is computed with the basic equations of multi-phase flow and the particle behavior with the equation of motion. The main results are as follows ; The long chain like clusters are formed at the center of the flow field, which makes the velocity of the center of the flow field uniform. As a result ER fluid flow changes from the Newtonian flow to the Bingham flow with the plug. The state of the flow depends on Mason number (Mn) and is classified into three patterns in terms of the change in the flow rate and the formation of the particle layer near the electrodes. At high Mn, the layer isn't formed and the flow rate is stable. At medium Mn, the layer is formed and the flow rate fluctuates. At low Mn, the clusters are formed between electrodes, and the fluid flow is stoped.