抄録
In order to clarify the details of the E.O.R mechanism using polymer solutions, the flow of polymer solutions penetrating into the Newtonian fluid (machine oil) in undulating slit channels was examined experimentally. Test fluids were the solutions of 0.01wt% PAA(polyacrylamide) with a different viscosity of solvent. From the observation of flow pattern, the shape of the interface between the both fluids is closely connected to the steady shear viscosity. Furthermore, it is found that the addition of PAA is effective for the recovery of the Newtonian fliud.
