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The competing role of shear and extension-induced first normal stress differences within a mixed flow for a viscoelastic fluid
Interested in the previous work of Walters et al . (Korea Aust Rheol J 21:225–233, 2009) regarding the competing roles of extensional viscosity and...
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Analysis of direct force measurements during capillary pinching of visco-elastic fluids in CaBER type experiments
A novel device is presented for direct measurement of the axial force evolution during the pinching of fluid filaments following an extensional step...
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Elastic and shear-thinning effects in contraction flows: a comparison
The flow through a 4:1 planar contraction has been investigated using different rheological models having the same shear viscosity, namely, the...
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Rheological transient effects on steady-state contraction flows
It may be assumed that the steady-state kinematics of viscoelastic contraction flows depends on the time-independent rheological properties only....
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A review of experimental methods for characterising composite viscosities of continuous fibre-reinforced polymer composites
Optimisation design of composite structures requires an accurate predictive model for forming behaviour. The simulation process contains a number of...
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The influence of the negative wake on the deformation and breakup of viscoelastic droplets
Experiments were performed using visual and PIV techniques in order to study the appearance of a negative wake as well as its influence upon the...
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Role of shear thinning in the flow of polymer solutions around a sharp bend
AbstractIn flows with re-entrant corners, polymeric fluids can exhibit a recirculation region along the wall upstream from the corner. In general,...
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Analysis of the flow properties of a Herschel–Bulkley fluid using short back extrusion viscometry and considering time-dependent and stress growth behaviors
The recently proposed short back extrusion (SBE) method is an improved immersed-type BE method. A translational concentric cylinder rheometer is...
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Rheological characterization of flow inception of thixotropic yield stress fluids using vane and T-bar geometries
In this work, two geometries are studied, the vane and the T-bar, which are best suited for assessing the start-up flow of thixotropic yield stress...
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MHD micropum** of viscoelastic fluids: an analytical solution
An analytical solution is found for examining the effect of a fluid’s elasticity on the performance of MHD micropumps. The test fluid is assumed to...
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An experimental investigation on impact process of Boger drops onto solid surfaces
In this paper, the impact dynamics of Boger drops on dry solid surfaces is investigated experimentally. The effects of viscosity, surface...
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Nonlinear viscoelastic characteristic investigations of waxy crude oils under stress-controlled large amplitude oscillatory shear (LAOStress)
Gelled waxy crude oils can be considered as an elasto-viscoplastic material, exhibiting the transition from linear to nonlinear viscoelasticity. The...
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Rheological behavior of paste in metal mines
Cemented paste backfill (CPB) has been one of the best practical approaches for tailings management and underground goaf treatment. Paste rheology is...
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Particle trajectory and orientation evolution of ellipsoidal particles in bounded shear flow of Giesekus fluids
The migration of ellipsoidal particles in bounded shear flow of Giesekus fluids is studied numerically using the direct forcing/fictitious domain...
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Migration of spherical particles in a confined shear flow of Giesekus fluid
The lateral migration of a spherical particle in a sheared Giesekus fluid is numerically studied by the direct-forcing fictitious domain method. The...
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Supercritical bifurcation to periodic melt fracture as the 1st transition to 2D elastic flow instability
This study, employing a numerical approximation, computationally describes 2D melt fracture as elastic instability in the flow along and outside a...
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Rheological properties of a multiscale granular system during mixing of cemented paste backfill: A review
The technology of cemented paste backfill (CPB) is an effective method for green mining. In CPB, mixing is a vital process aiming to prepare a paste...
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Vortex dynamics at the junction of Y-shaped microchannels in dilute polymer solutions
Understanding the vortex dynamics in polymer solutions is one of keys for the flow control in a wide range of polymer-related material processing...
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Formulation, characterisation and flexographic printing of novel Boger fluids to assess the effects of ink elasticity on print uniformity
Model elastic inks were formulated, rheologically characterised in shear and extension, and printed via flexography to assess the impact of ink...
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Thermal fatigue and collapse of waxy suspensions
Due to the existence of a continuous (percolating) network of weak interparticle bonds in a liquid, wax suspensions can behave as “soft breakable...
