An account is given of the development of the idea of a yield stress for solids, soft solids and structured liquids from the beginning of this century to the present time. Originally, it was accepted that the yield stress of a solid was essentially the point at which, when the applied stress was increased, the deforming solid first began to show liquid-like behaviour, i.e. continual deformation...

Simple liquids are conventionally described by Newtonian fluid mechanics, based on the assumption that relaxation processes in flow occur much faster than rate at which is driven. Nanoscale solids, however, have characteristic mechanical response times picosecond scale, comparable to simple liquids; as a result, viscoelastic effects liquid must be considered. These been observed using time-reso...

This investigation peruses the features of temperature and mass transport non-Newtonian third-order liquid over an absorbent convective shrinking sheet. The sheet is packed with silver nanoparticles. Buongiornos modelling uses a particular Brownian movement thermophoresis consequences using non-linear radiation. partial differential equations are changed to ordinary similarity transformations. ...

The rheological characteristics of liquids play an important role in the flow near dynamic contact lines, where deformation rates are extremely large. liquid line dynamics and free surface configuration curtain coating polymer solutions were experimentally studied using visualization to determine effect two characteristics: shear thinning extensional thickening. critical web speeds for heel for...

A stabilized form of finite element formulation known as the Galerkin least-squares (GLS) method is implemented here for solving two-dimensional incompressible non-Newtonian fluid model blood flow in a diseased artery. The modelling this type based on conservation mass and momentum equations, coupled with generalised Newtonian liquid (GNL) constitutive equation characterized by power law (GPL) ...

The second law analysis of heat transfer of a non-Newtonian, laminar falling liquid film along an inclined heated plate is investigated. The upper surface of the liquid film is considered free and adiabatic. Velocity and temperature profiles are obtained analytically and used to compute the entropy generation number (Ns), irreversibility ratio (Ф) and the Bejan number (Be) for several values of...

The shear viscosity of liquid copper is studied using nonequilibrium molecular-dynamics simulations under planar shear flow conditions. We examined variation of viscosity as function of shear rate at a range of pressures (ca. 0 - 40 GPa). We analyzed these results using eight different phenomenological models and find that the observed non-Newtonian behavior is best described by the Powell-Eyri...