We perform micro-rheological experiments with a colloidal bead driven through viscoelastic worm-like micellar fluid and observe two distinctive shear thinning regimes, each of them displaying Newtonian-like plateau. The behavior at larger velocities is in qualitative agreement macroscopic rheological experiments. second process, observed Weissenberg numbers as small few percent, appears to have...

flow field and heat transfer of a nanofluid, whose non-newtonian behavior has been demonstrated in the laboratory, in a square enclosure have been numerically modeled and investigated. to estimate the viscosity of nanofluid, experimental data of hong and kim, 2012 have been used, and a new model has been proposed. finally, the obtained results have been compared to those of newtonian behavior. ...

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...

Many biological and industrial fluids are filled with micro-scale particles that can serve as "state markers" for real-world issues, such as human health and public infrastructure. In order to extract this valuable information from such fluids, the controlled manipulation of particles is often necessary. Microfluidic technologies based on viscosity-dominant flows have achieved this essential st...

the present work reports and discusses the results of a 3d simulation of the injection molding process of a rubber compound that includes the mold flling stage and  material curing, using the computer code is developed in “udf” part of the fluent 6.3 cae software. the data obtained from a rheometer (mdr 2000) is used to characterize the rubber material in order to fnd the cure model parameters ...

The convective heat transfer and pressure drop of water based Al2O3 nanofluid in a horizontal tube subject to constant wall temperature condition is investigated by computational fluid dynamic (CFD) method. The Al2O3 nanofluid at five volume concentration of 0.1, 0.5, 1.0, 1.5 and 2 % are applied as a non Newtonian power law and Newtonian fluid with experimentally measured properties of density...

a theoretical solution is presented for the forced convection heat transfer of a viscoelastic fluid obeying the giesekus constitutive equation in a concentric annulus under steady state, laminar, and purely tangential flow. a relative rotational motion exists between the inner and the outer cylinders, which induces the flow. a constant temperature was set in both cylinders, in this study. the f...

In this paper, we mainly focus on the compressible viscoelastic flows of Oldroyd type with general pressure law, one non-Newtonian fluids exhibiting elastic behavior. For P′(ρ̄)+α>0, α > 0 being elasticity coefficient fluid, prove global existence and uniqueness strong solution in critical Besov spaces when initial data u⃗0 low frequency part ρ0, τ0 are small enough compared to visc...