👉 The Walker fluid is a theoretical model used in soft matter physics to describe the behavior of viscoelastic fluids, particularly those exhibiting complex flow properties. It is named after John Walker, who first proposed this concept in the context of polymer solutions and melts. The Walker fluid is characterized by a balance between elastic and viscous forces, where the elasticity arises from the network of polymer chains or the interactions within the fluid. This model captures the non-linear and time-dependent behavior of such fluids, including phenomena like shear thinning, normal stress differences, and the formation of microstructures under flow. By using a mathematical framework that combines elements of both solid-like and liquid-like responses, the Walker fluid provides valuable insights into the dynamics and rheology of complex viscoelastic materials.
