抄録
In this study, we aim to develop a scheme for estimating properties of viscoelastic liquid, by means of Ultrasonic Velocity Profiler (UVP). Unsteady velocity profiles of a visco-elastic fluid driven by sudden spin are measured with it to find out the behavior of the fluid motion as well as to assess the visco-elastic properties. The measurement result shows typical response due to the elastic property. In addition, we carried out numerical simulation of the transient flow based on Bingham model considering yield stress, to clarify the oscillatory behavior.
