急縮小部を有するマイクロ流路内における非ニュートン流体の流れ

抄録

In recent years, the development of microfabrication technology has encouraged the research of microscale flow. However, the detail of the non-Newtonian fluid flowing through the microchannel is not insufficient yet. The purpose of the present study is to clarify the behavior of non-Newtonian fluid flow through the microchannel, we carried out experiments to obtain the velocity profiles in the microchannel with an abrupt contraction. In addition, we have focus on the secondary flow upstream of the abrupt contraction where the characteristic flow of the non-Newton fluid can been observed conspicuously. Thus, we measured vortex lengths occurring in the abrupt contraction. As the result, we have clarified that the electric interaction between the wall of the microchannel and the fluid affects the velocity and the vortex lengths near the wall.