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Showing 1 to 20 of 22 for “"effective viscosity"”.
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The Effective Viscosity of Ash-Laden Flows
… other fine-grained sediment and increases the effective viscosity of the flow. The increase in effective viscosity decreases the settling velocity of the sediment within the flow, which in turn increases the bulk density of the flow. The increase in bulk density increases the erosivity of the …
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The Effective Viscosity of Ash-Laden Flows
… other fine-grained sediment and increases the effective viscosity of the flow. The increase in effective viscosity decreases the settling velocity of the sediment within the flow, which in turn increases the bulk density of the flow. The increase in bulk density increases the erosivity of the …
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Electromechanics and electrorheology of fluid flow with internal micro-particle electrorotation
… general governing equations in the zero spin viscosity and the finite spin viscosity small spin velocity limits for both Couette and Poiseuille flow geometries. In the zero spin viscosity limit, expressions for the spin velocity and effective viscosity of Couette flow as well as the spin …
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Modeling and Simulation of Molecular Couette Flows and Related Flows
… of molecular Couette flows are modeled by using effective radial distribution functions. Then, with these modeled velocity and density profiles, the effective viscosity in the stress tensor of Navier-Stokes equation is constructed. The velocity and density profiles are reproduced by …
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Investigation of Hydrodynamic and Depletion Interactions in Binary Colloidal Dispersions
… particle approached contact with the plate. An effective viscosity, that approached the dispersing fluid viscosity at contact and the bulk viscosity at large separations, was determined for the system. This effective viscosity displayed similar characteristics to those predicted theoretically by …
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Experimental and Numerical Analysis of Convective Heat Transfer Enhancement With Nanofluids Flowing Over A Heated Flat Plate
… dynamic light scattering system (DLS). Nanofluid viscosity was measured and equations for the viscosity of the nanofluids were developed as a function of temperature. The significance of correct effective viscosity and thermal conductivity values of nanofluids were investigated through sensitivity …
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Large Scale Simulations of Bidisperse Emulsions and Foams
… study has been performed to examine the effective viscosity of these systems as a function of the overall volume fraction, volume fraction of small droplets, Capillary number and droplet size ratio. Monodisperse systems exhibit disorder-order transitions at high volume fractions and low …
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Numerical Simulation of Red Blood Cells in Capillaries
… velocity when taking into the account the effective viscosity of the mixture of RBCs and fluid behind the moving interface. This indicates the reason of the penetration failure in a capillary.
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Thermal evolution of a compositionally stratified earth, including plates
… convection can be considered, depending on the effective viscosity of the lithosphere: the "mobile lid" regime, and the "stagnant lid" regime. For brittle dissipation, the lithosphere strength is a function of yield stress which, when nearing a certain critical value, introduces a third regime, …
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The Influence of Curvature on Mantle Convection featuring a Temperature-dependent Viscosity
… by a strongly temperature-dependent viscosity. Mantle convection regime is first examined in 2D and 3D spherical geometry with varying mantle curvature (core-to-surface radii-ratio, f) and constant heating conditions and viscosity contrast across the mantle depth (ΔηT). The onset of …
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Forces on a wall-bound leukocyte due to flowing red blood cells
… enclosing Newtonian fluid with a larger viscosity than the Newtonian plasma outside of them. Membrane inertia is taken to be negligible, so motion matches fluid velocity. They allow for a finite deformation with strong resistance to surface dilatation and relatively small but finite …
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Biomechanical structure-function relationships of collagen tissues, B Cell membranes, and amyloid fibers
… properties of the membrane, specifically the effective viscosity of the membrane, evolve upon activation of B cell biochemical machinery. We further identify the presence of receptors in membrane nanotubes conferring B cells with the ability to sense antigen at remote locations. Lastly, this …
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Effects of Linoleic Acid on Tether Formation between Monocytes and Endothelial Cells
… the threshold force for tether extraction or the effective viscosity of tethers extracted from HUVECs, but it decreased the threshold force for tether extraction from U937 monocytes and increased the effective tether viscosity. Treatment with U73122 blocked the reduction in the threshold force …
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Physical phenomena of thin surface layers
… applications and roles may be varied, to be used effectively, the physical properties of these films and the factors influencing their stability need to be well understood. Surfaces can have a strong effect on the stability of thin films. In thin films of polymer blends, wetting layers rich in one …
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Dynamic behavior of healthy and malaria infected human red blood cells
… related exported proteins act to increase the effective viscosity of the RBC membrane. The role of the temperature-dependent, viscous behavior of the RBC membrane is further explored in microfluidic flow experiments, where the flow behavior of RBCs is quantified in fluidic structures with …
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Simulation of free-surface flows and development of an improved particle method
… model is coupled with WC-MPS to calculate the effective viscosity and shear stress. The coupled method is then employed to simulate granular column collapses caused by dry granular materials such as glass beads. During the collapses, the flowing region and static region are reproduced. …
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Cuttings transport and hydraulics optimisation for underbalanced drilling (UBD) operations in concentric and eccentric, directional and extended reach wells.
Underbalanced drilling facilitates the effective control of wellbore pressures - amongst several other important advantages - when compared to conventional drilling technology. However, this involves the flow of multiphase fluids, which introduces additional complexities due to highly transient …
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Anwendung des Lattice-Boltzmann-Verfahrens zur Berechnung strömungsakustischer Probleme
… is examined by calculation of phase velocity and effective viscosity for sound waves. Schemes with nine velocities in two dimensions and nineteen velocities in three dimensions are considered. For each of these a single relaxation time model (LBGK-model) and a multiple relaxation time model (MRT) …
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Fabrication, Characterization and Modeling of Functionally Graded Materials
… of particles; this change further affects the effective viscosity of the suspension and thus changes the drag force of particles. A Stokes' law based model is developed to simulate the sedimentation process, demonstrate the effect of manufacturing parameters on sedimentation, and predict the …
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Experimental and Analytical Investigation of Particle Dynamics in Newtonian and non-Newtonian Fluids in a Taylor-Couette Cell
… exhibit pronounced shear-thinning behavior, with viscosity decreasing as shear rate increases. Carbomer was found to be a superior model fluid compared to CMC, as it more closely mimics the rheological properties of the reference DF, adhering to a Herschel-Bulkley model which includes yield stress …
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