Results 11 to 20 of about 10,272,734 (283)

Inkjet printing of non-Newtonian fluids [PDF]

open access: yes, 2011
Jet breakup is strongly affected by fluid rheology. In particular,small amounts of polymer can cause substantially different breakup dynamics compared to a Newtonian jet, influencing in-flight fragmentation and detachment from the nozzle.

core   +9 more sources

The shear-driven Rayleigh problem for generalised Newtonian fluids [PDF]

open access: yes, 2014
We consider a variant of the classical ‘Rayleigh problem’ (‘Stokes’s first problem’) in which a semi-infinite region of initially quiescent fluid is mobilised by a shear stress applied suddenly to its boundary. We show that self-similar solutions for the
Duffy, Brian R.   +2 more
core   +4 more sources

Steady flow of power-law fluids in a 1:3 planar sudden expansion [PDF]

open access: yes, 2013
The laminar flow of inelastic non-Newtonian fluids, obeying the power-law model, through a planar sudden expansion with a 1:3 expansion ratio was investigated numerically using a finite volume method. A broad range of power-law indices in the range 0.2 n
Dhinakaran, S.   +3 more
core   +4 more sources

Shallow flows of generalised Newtonian fluids on an inclined plane [PDF]

open access: yes, 2015
We derive a general evolution equation for a shallow layer of a generalised Newtonian fluid undergoing two-dimensional gravity-driven flow on an inclined plane.
Duffy, Brian R.   +2 more
core   +4 more sources

Severity parameter and global importance factor of non-newtonian models in 3D reconstructed human left coronary artery [PDF]

open access: yes, 2011
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Soulis, JV   +4 more
core   +6 more sources

Stress Overshoot Analysis in Flow Start-Up Tests: Aging Time Fitting of the Different Gel-Based Drilling Fluids

open access: yesGels
Drilling fluids are essential for maintaining cutting suspension during drilling, exhibiting gel-like behavior at rest and liquid-like behavior under shearing. These fluids display shear-thinning behavior, yield stress, and thixotropy.
Luis H. Quitian-Ardila   +6 more
doaj   +1 more source

Microrheometer for Biofluidic Analysis: Electronic Detection of the Fluid-Front Advancement

open access: yesMicromachines, 2021
The motivation for this study was to develop a microdevice for the precise rheological characterization of biofluids, especially blood. The method presented was based on the principles of rheometry and fluid mechanics at the microscale.
Lourdes Méndez-Mora   +7 more
doaj   +1 more source

The matching of a “one-dimensional” numerical simulation and experiment results for low viscosity Newtonian and non-Newtonian fluids during fast filament stretching and subsequent break-up [PDF]

open access: yes, 2012
This paper develops a model for fast filament stretching, thinning, and break-up for Newtonian and non-Newtonian fluids, and the results are compared against experimental data where fast filament relaxation occurs. A 1D approximation was coupled with the

core   +2 more sources

Natural convection of viscoplastic fluids in side-heated open cavities

open access: yesCase Studies in Thermal Engineering
This study considers the natural convection process of viscoplastic fluid in a side-open cavity filled with conductive solid blocks, which are uniformly distributed and form a square lattice.
Paulo R.M. Santos   +3 more
doaj   +1 more source

Flow of Non-Newtonian Fluids

open access: yesNihon Reoroji Gakkaishi(Journal of the Society of Rheology, Japan), 1982
The present paper summarizes various problems on non-Newtonian fluid mechanics. Due to complex rheological behaviors of non-Newtonian fluids, constitutive equations have highly nonlinear character. As two approaches to obtain constitutive equations, continuum mechanics and molecular theory are described, and then a number of models are presented ...
openaire   +4 more sources

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