This model can be used for materials that tend to be Newtonian in behavior at shear stresses considerably higher than their yield stress value.
with sy the yield stress, k the consistency.
Use this model to emulate materials that have a yield stress, but are Newtonian at stresses greater than the yield stress. To model a steeper transition from the Newtonian to the yield stress region, use the Bingham yield stress model or the Herschel-Bulkley model.
This model is a variant of the Bingham yield stress model.
