This Viscosity model allows data to be fitted to the following model:
With ηo the zero shear viscosity, ηoo the infinite viscosity, k the consistency (characteristic time), n the power law index and an a parameter describing the transition between Newtonian plateau and power law region.
Use this model to fit data from a fluid that has a low and high infinite viscosity region and with a power law region in between. The parameter a adjusts the transition from the Newtonian plateau into the power law region.
The Carreau-Yasuda model is an extension of the Carreau model. The advantage over the Carreau model is that it is continuous for all shear rates >= 0.
