Rayleigh-Bénard's convection is a classic problem of heat transfer. Since the 1900s, studies for Newtonian fluids have been widely developed in this field and phenomena well understood. On other hand, complexity non-Newtonian behavior makes number much lower. Among behavior, shear-thinning fluid are even rarer. This work focuses on numerical study natural shear thinning, Rayleigh-Bénard ...

The aim of this study is to investigate the effects of non-Newtonian blood rheology models on the wall shear stress (WSS) distribution in a cohort of patients-specific coronary arteries. Twenty patients with diseased left anterior descending (LAD) coronary arteries (with varying degrees of stenosis severity from mild to severe) who underwent angiography and in-vivo pressure measurements were se...

Abstract A comprehensive study of the rheological characterization aqueous solutions polyethylene oxide (PEO) with molecular mass 4 × 106, 5 and 8 106 g/mol, respectively, named (4 miDA), (5 (8 miDA) was conducted. large batch samples miDA PEO concentrations varying from 0.1% to 3%, representing range dilute very high viscous hydrated gels, were tested. Steady-state shear flow oscillatory measu...

OBJECTIVES The atherosclerotic process in arteries is correlated with the local wall shear stress (WSS). Plaque development particularly occurs in regions with recirculation (ie, where the WSS oscillates). We investigated the effects of non-Newtonian blood viscosity, variations in flow rate, and vessel diameter on wall phenomena in a carotid bifurcation model. MATERIALS AND METHODS The flow t...

Introduction: This investigation explores the heat and mass transfer properties of a non-Newtonian nanofluid containing graphene nano-powder ethylene glycol during peristalsis. The rheological characteristics are determined using Carreau-Yasuda model, various factors such as viscous dissipation, Lorentz force, Ohmic heating, Hall effects taken into account. Mixed convection thermal radiation al...

The motion of a long gas bubble in confined capillary tube is ubiquitous wide range engineering and biological applications. While the understanding deposited thin viscous film near wall Newtonian fluids well developed, deposition dynamics commonly encountered non-Newtonian remains much less studied. Here, we investigate moving shear-thinning with systematic experiments, varying zero-shear-rate...

Perturbations to the homeostatic distribution of mechanical forces exerted by blood on the endothelial layer have been correlated with vascular pathologies, including intracranial aneurysms and atherosclerosis. Recent computational work suggests that, in order to correctly characterize such forces, the shear-thinning properties of blood must be taken into account. To the best of our knowledge, ...