Table 1 Rheology information of test fluids: power law fitting parameter of viscosity versus shear rate of Xanthan Gum solution, and constant viscosities and relaxation times of PVP solutions as a Boger fluid.
Solutions | Concentration | Power law fit (\({\boldsymbol{\eta }}={\boldsymbol{m}}{\dot{{\boldsymbol{\gamma }}}}^{{\boldsymbol{n}}-{\bf{1}}}\)) | η(Pa · s) | λ(s) | |
|---|---|---|---|---|---|
m | n | ||||
Xanthan gum | 700 ppm | 0.090 | 0.685 |  |  |
|  | 1000 ppm | 0.149 | 0.608 |  |  |
|  | 1500 ppm | 0.359 | 0.526 |  |  |
PVP | 3000 ppm |  |  | 0.155 | 2.15 × 10 – 3 |
PVP | 8000 ppm |  |  | 0.385 | 2.57 × 10−3 |
