In the above equation, σ 0 is the value of yield stress and η C is the value of Casson viscosity that is related to a high shear rate viscosity. Herschel-Bulkley model is another model used in yield ...

A new method of describing thixotropy in waxy crude oil transported through pipelines is both accurate and more convenient than previous methods. Thixotropy is an important rheological behavior of ...

Principal stresses are defined as the maximum and minimum normal stresses in a plane. Principal stresses are perpendicular to each other and oriented such that shear stresses are zero. For 3D stress ...