Nonlinear peristaltic motion of a Jeffery nanofluid with shear stress and MHD effects

摘要

Nowadays, the mechanics of nanofluids has forced the recent researchers for the enhancement of thermal conductivity of base fluid. The word "nanofluid" introduced by Choi [1], it denotes to a liquid suspension containing ul-trafine particles having diameter less than 50nm and these particle can be discovered in the metals such as (Al, Cu), oxides (Al_2O_2), carbides (SiC), nitrides (SiN) or nonmetals (Graphite, carbon nanotubes, nanofiers, nanosheets, droplets) [2-3]. Nanofluid flows also play indispensable role in some industrial and biomedical instruments, such as drug delivery, photodynamic therapy, molecular motors, neuro electronic interfaces, cancer diagnosis and therapy, surgery, in vivo therapy, neuro electronic interfaces, cell repair machines, protein engineering and shedding new light on cells. It may be famous that particle size is an important physical parameter in nanofluids because it can be used to tailor the nanofluid thermal properties as well as the suspension stability of nanoparticles. The use of magnetic particles in the treatment of cancer is less focused on the delivery of drugs and more on their use as a new therapeutic concept in which tumor cells are damaged by applying local heat through an external magnetic field. A phenomenon that nanofluids has a characteristic feature of thermal conductivity enhancement, which indicates the possibility of using nanoiluids in advanced nuclear systems investigated by Masuda et al. [4]. An analytical model for convective transport in nanofluids considering of the Brownian diffusion and thermophoresis are studied by Buongiorno and Hu [5].