Keyur Kanade
Ansys Employee

Hi @prajput ,

When the rate of deformation (shear rate) in a fluid is not directly proportional to the applied shear stress, you have a non-Newtonian fluid. 

Depending on the behavior exhibited by the fluid, they can be categorized as one of the following types of non-Newtonian fluids - Bingham plastic, Pseudoplastic, and Dilatant.