抄録
Velocity vector distributions of non-Newtonian fluid flow in a channel obstructed by an antisymmetric array of cylinders are measured by means of PTV. The flow pattern of polyacrylamide (PAM) solution differs significantly from that of water. In the case of PAM solution, fluid cannot proceed easily through a narrower passage, which shows that an elongational viscosity of PAM solution is large. On the other hand, in this experiment there is little difference between the flow pattern of water and that of surfactant solution.
