Mesoscale hydrodynamic modeling of a colloid in shear-thinning viscoelastic fluids under shear flow
نویسندگان
چکیده
منابع مشابه
Turbulent pipe flow of shear-thinning fluids
Direct numerical simulation of the weakly turbulent flow of non-Newtonian fluids is undertaken for two different generalised Newtonian rheology models using a spectral element-Fourier method. Results for a power law (shear-thinning) rheology agree well with experimentally determined logarithmic layer correlations and with other previously published experimental work. As the flow index becomes s...
متن کاملViscoelastic properties of dynamically asymmetric binary fluids under shear flow.
We study theoretically the viscoelastic properties of sheared binary fluids that have strong dynamical asymmetry between the two components. The dynamical asymmetry arises due to asymmetry between the viscoelastic stresses, particularly the bulk stress. Our calculations are based on the two-fluid model that incorporates the asymmetric stress distribution. We simulate the phase separation proces...
متن کاملDegassing cascades in a shear-thinning viscoelastic fluid.
We report the experimental study of the degassing dynamics through a thin layer of shear-thinning viscoelastic fluid when a constant air flow is imposed at its bottom. The fluid is an aqueous solution of cetyltrimethylammonium bromide (CTAB) and sodium salicylate (NaSal). Over a large range of parameters, the air is periodically released through a series of successive bubbles, hereafter named c...
متن کاملStability of Shear Flows of Viscoelastic Fluids under Perturbations Perpendicular to the Plane of Flow
Over the past twenty years there has been considerable interest in the question of whether shear flows of viscoelastic fluids can be unstable when the Reynolds number is low but the Weissenberg number is high. Two obvious sources of instability are when there is a maximum in the shear stress function or when the equations of motion lose evolutionarity [l]. These instabilities can be regarded as...
متن کاملNumerical investigation of thermal mixing of shear thinning fluids in one-way opposing jets
In recent years, impinging streams have received increasing interest for their high efficiency in heat and mass transfer. This numerical study was conducted to investigate flow and heat transfer characteristics of one-way opposing jets of non-Newtonian fluids. Effects of Reynolds number impinging angle, momentum ratio and flow behavior index on mixing index were evaluated. The results showed im...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 2011
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.3646307