in this article cuo/water nanofluid was synthesized by using polyvinylpyrolidone (pvp) as the dispersant.  thenanofluid stability period and the heat transfer enhancement were determinedby measuring the thermal conductivities. to study the nano-fluid stability, zeta (ζ) potential, and absorbency were measured under different ph values and pvp surfactant concentrations; also thermal conductivity...

In this paper, the global dynamics of a hanging fluid conveying cantilevered pipe with concentrated mass attached at free end is investigated. The problem interest not only for engineering applications, but also because it displays interesting and often surprising dynamical behaviour. widely used nonlinear models based on transverse motion are able to accurately capture behaviour system very hi...