Power law is a popular fluid model that is commonly used in rheology and fluid mechanics to represent time-independent non-Newtonian rheology and fluid flow phenomena in bulk and in situ. In fact, power law is the simplest time-independent non-Newtonian fluid model that represents shear thinning and shear thickening (as well as Newtonian as a special case), and this should largely explain its popularity. Accordingly, there is a huge amount of literature on almost all aspects and applications of power law fluid model in rheology, fluid mechanics, mechanical engineering, chemical engineering, biomedical engineering, medical research, and so on (see for instance ).