Fig. 5

Rheological behavior of GOnP/(EG + W) nanofluid set. a Shear rate, \( \overset{.}{\gamma } \), vs. dynamic viscosity, η, (filled symbols) and shear stress, τ, (empty symbols) at 293.15 K and different mass concentrations: diamond, base fluid 0%; circle, 0.10%; triangle, 0.25%; and square, 0.50%. b Temperature dependence of dynamic viscosity, η, at different mass concentrations: diamond, base fluid 0%; circle, 0.10%; triangle, 0.25%; and square, 0.50%. The dashed lines represent the fitted VFT model, Eq. (4)