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...
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The swimming behaviour of microorganisms can be strongly influenced by the rhe ology of their fluid environment. In this manuscript, we experimentally investigate the effects of shear-thinning viscosity on the swimming behaviour of an undula tory swimmer, the nematode Caenorhabditis elegans. Tracking methods are used to measure the swimmer’s kinematic data (including propulsion speed) and vel...
متن کاملMiscible displacement fronts of shear thinning fluids inside rough fractures
The miscible displacement of a shear-thinning fluid by another of same rheological properties is studied experimentally in a transparent fracture by an optical technique imaging relative concentration distributions. The fracture walls have complementary self-affine geometries and are shifted laterally in the direction perpendicular to the mean flow velocity U : the flow field is strongly channe...
متن کاملPlanar Unsteady Flows of Incompressible Heat Conducting Shear Thinning Fluids
It is evident that behaviour of many fluids varies with varying temperature. We present mathematical properties of unsteady planar flows of shear thinning incompressible fluids where the change of the temperature influences the viscosity, which is at the same time shear thinning (power law fluids with power law index r − 2 < 0). Contrary of [2] (where a threedimensional flow is studied for 9/5 ...
متن کاملRegularity of flows and optimal control of shear-thinning fluids
We study optimal control problems of systems describing the flow of incompressible shearthinning fluids. Taking advantage of regularity properties of the flows, we derive necessary optimality conditions under a restriction on the optimal control.
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2015
ISSN: 0022-1120,1469-7645
DOI: 10.1017/jfm.2015.600