1514 粘弾性流体の管入口流れの立ち上がり挙動に対する上流壁の影響

抄録

A square cross-section reservoir attached with a capillary on its bottom is used to investigate the influence of the upper wall on start-up behavior of viscoelastic capillary entry flow. The viscoelastic flow shows remarkable transient behavior such as over shoot of velocity and flow rate before they attain their respective terminal values. The upper wall markedly affects the flow pattern and enhances the entry pressure loss.