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Showing 1 to 20 of 50 for “"Viscometer"”.
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Numerical study of particle dynamics in a falling-ball viscometer
The falling-ball viscometer is a device where a spherical particle falls along the axis of a circular cylinder filled with viscous fluid. The various classical results for this device are developed under the assumption that the Reynolds number of the flow is zero, i.e., Stoke's flow. Inertial …
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The application of a modified MacMichael viscometer in rheologic studies of montmorillonite clays
<p>Available instruments for viscosity and rheologic measurements necessitate disruption of the system under test prior to observations. Generally, the gel structure of a thixotropic clay must be disturbed by shaking, pouring into a container for testing, and again upon insertion into the sample of …
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The rheological characterisation of non- Newtonian slurries using a novel balanced beam tube viscometer
The novel Balanced Beam Tube Viscometer (BBTV), developed at the University of Cape Town, has been further developed and refined. Extensive work has been done in the following areas: (i) The effective length of the BBTV tubes. (ii) Interpretation of the data obtained using the BBTV in both the …
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Fluid flow behavior of semi-solid aluminum at high shear rates
… studied using a novel apparatus, the Drop Forge Viscometer (DFV). The viscometer determines force from the curvature of displacement data allowing calculations of viscosities at shear rates in excess of 1000 s-1. Alternatively, the DFV can be operated like a conventional parallel-plate …
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The rheology and flow behaviour of high concentration mineral slurries
… investigated using a modified Balance Beam Tube Viscometer. The viscometer is capable of producing reliable data using a computer based data acquisition system and three different tube diameters. The aim of this research is to determine the rheology of backfill tailings in order to predict …
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The flow behaviour of shallow fluidised beds
… was studied. experimentally using a rotational viscometer, and an inclined open channel. Initially, tests were carried out with the viscometer in order to establish qualitative trends in the flow properties of a variety of materials over a wide range of fluidising conditions. Also, a technique …
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Viscosity of simple liquids including measurement and prediction at elevated pressure
A falling body viscometer with self-centring sinkers has been developed and used to measure the viscosities of benzene, carbon tetrachloride and eight halogenated hydrocarbons at pressures up to 500 MN m⁻² in the temperature range 25˚C to 100˚C. Two isotherms of water have also been measured at …
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Ferrofluid flow and torque measurements in rotating magnetic fields
… from this fluid flow is measured using a Couette viscometer as a function of magnetic field amplitude, frequency, and direction of rotation. The first three sets of experiments measure this torque on the outer wall of a Lexan spindle that is attached to a viscometer, functioning as a torque meter. …
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Transitional and turbulent flow of non-Newtonian slurries in pipes
… base of non-Newtonian slurry behaviour - a tube viscometer and two pumped recirculating pipe test rigs.
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The effect of filler on the mechanical properties of a novel resin-based calcium phosphate cement
… of the experimental resin were determined in a viscometer (DV-II+ Viscometer; Brookfield, Middleboro, MA). The data were analyzed using a one-way analysis of variance (ANOVA). A 5-percent significance level was used for all the tests. Resin composites with 30-percent TCP filler showed the …
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Understanding Structure-Property Relationships for Impact Polystyrene
… spectroscopy analysis and microfluidic capillary viscometer were then extended as in situ tools to monitor polymerizing systems and thereby follow morphology development. Ex situ rheological methods were then employed on post-phase inversion samples to extract interfacial tension using …
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Rheological Study of Concentrated Silica Suspensions
… in water were investigated using a rotational viscometer and a Zeta-Meter. The viscometric data was analyzed for shear dependence, solid concentration dependence and pH dependence. The data for electrophoretic mobility was analyzed for pH dependence.</p><p>The experimental data was applied to …
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Thermal Performance of Microencapsulated Phase Change Material Slurry
… calorimeter, a temperature-controlled concentric viscometer, and a well-calibrated heat transfer loop. Results indicate that the use of an effective nucleating agent is necessary to prevent a large amount of supercooling of the phase change material. Other experimental results indicate that MPCM …
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High Temperature and High Pressure Determination of the Viscosity and Density of Bitumen as well as the Mutual Solubility of a Bitumen and Water Mixture
… a variable-volume bellows cell with a custom viscometer to measure density and viscosity for a Christina Lake bitumen and Christina Lake bitumen/water mixtures at 13.8 MPa (2000 psig) up to 300⁰C. Mutual solubility and composition is determined from samples using Karl Fischer titration and …
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A fundamental study of the flow of dilatant fluids
… with a specially constructed cone and plate viscometer. Provisions were made to determine pressure drop over the fittings: coupling, glove valve, and 90 degree elbow. Dilatant fluids consisting of corn starch suspended in the liquids water, ethylene glycol, and glycerine with values of flow …
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On-line non-destructive ultrasonic rheology measurement of solder pastes
… measurements of the solder pastes from the viscometer and rheometer. One of the potential limitations of viscometer- and rheometer-based measurements is that the collection and preparation of the solder paste samples can irreversibly alter the structure and flow behaviour of the sample. Due …
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Evaluation of performance graded asphalt binder equipment and testing protocol
… Film Oven, Pressure Aging Vessel, Rotational Viscometer, Dynamic Shear Rheometer, and the Bending Beam Rheometer. A testing program was established to evaluate the equipment performance and related test methods and to develop a confidence in the testing protocol and equipment performance such …
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Program for Predicting the Densities and Pressure of Invert Elviulsion Muds Under Static Well Conditions
… by MI Drilling Fluids using a Huxley - Bertram viscometer modified to directly give the density of the fluid.
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