A <generalized Newtonian fluid> responds instantaneously with stress determined only by the current scalar <shear rate>. It therefore cannot represent <viscoelasticity>, including stress relaxation, elastic recoil, memory, and rate-dependent normal stresses. It also cannot represent <thixotropy>, in which microstructure and viscosity evolve with the duration and history of shearing. Other omitted effects include hysteresis and genuine finite-time yielding.

Solution

Past exam of the mathematics course of the University of Cambridge / 2021 / iii / Paper 352 / 1 / b / Solution

 Solution (source code)