Viscosity

Abdulagatov, Ilmutdin M.; Assael, Marc J.

doi:10.1002/9780470094679.ch6

Cited by 4 publications

(5 citation statements)

References 77 publications

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“…Riedel has proposed the same correlation model for the thermal conductivity of multicomponent aqueous salt solutions. This relationship for the thermal conductivity gives good prediction agreement (within 5%) with experimental data for many aqueous salt solutions. − ,− Many authors examined the accuracy and predictive capability of Riedel’s model (see also a review by Horvath). The deviation statistics of correlation eqs to are also presented in Table .…”

Section: Results and Discussionmentioning

confidence: 93%

Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

et al. 2015

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Volumetric (density), acoustic (speed of sound), and transport (viscosity) properties of natural geothermal fluids from south Russia Geothermal Field have been measured over the temperature range from (278 to 343) K and at atmospheric pressure. The measurements were made using the Anton Paar DMA4500 densimeter and Stabinger SVM3000 viscometer for four geothermal fluid samples from the hot-wells. A sound-speed analyzer (Anton Paar DSA 5000 M) was used to measure the speed of sound and the density of the same geothermal samples. The combined expanded uncertainty of the density, viscosity, and speed of sound measurements at the 95% confidence level with a coverage factor of k = 2 is estimated to be as follows: density, 0.0005% (for DMA 4500), 0.02%, or 0.5 kg•m −3 (for the SVM 3000 viscodensimeter) and 0.01% (for the DSA 5000 M sound-speed analyzer); viscosity, 0.35% (for SVM 3000); and speed of sound, 0.1% (DSA 5000 M). Measured values of density and speed of sound were used to calculate other very important derived thermodynamic properties of the geothermal fluid samples. Measured values of density, viscosity, and speed of sound were used to develop correlation models which reproduced the measured values of density, viscosity, and speed of sound within 0.03%, 2.55%, and 0.06%, respectively. The measured properties at atmospheric pressure have been used as reference values for the prediction of high pressure properties.

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Section: Results and Discussionmentioning

confidence: 93%

Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

et al. 2015

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“…Partially disrupted conformations have exposed hydrophobic areas and are more aggregation prone especially at high concentrations when the mutual distances are ≤ 1 nm. 7,[16][17][18]30,31 Therefore, we investigated the reason for the relatively low aggregation rate of mAb1 at lower pH values between 4 and 5, across a wide concentration range, using NMR. NMR directly provided unequivocal information on the pH -dependent conformation of mAb1 with increasing concentration.…”

Section: Introductionmentioning

confidence: 99%

Insights into the Conformation and Self-Association of a Concentrated Monoclonal Antibody using Isothermal Chemical Denaturation and Nuclear Magnetic Resonance

Namanja

Chan

et al. 2021

Journal of Pharmaceutical Sciences

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“…Various techniques are available for accurate measurements of the viscosity of liquids. Most of them were detailed, described, and reviewed in the literature. , The most widely used techniques to measure the viscosity of liquids are (1) capillary flow and (2) falling-body method. The advantages and disadvantages of these methods and their accuracy were comprehensively reviewed in our earlier publication .…”

Section: Introductionmentioning

confidence: 99%

“…Most of them were detailed, described, and reviewed in the literature. , The most widely used techniques to measure the viscosity of liquids are (1) capillary flow and (2) falling-body method. The advantages and disadvantages of these methods and their accuracy were comprehensively reviewed in our earlier publication . The method of falling-body in comparison with other methods of dynamic viscosity measurements of gases and liquids in a wide range of temperature and pressure changes has several advantages.…”

Section: Introductionmentioning

confidence: 99%

New Design of the Falling-Body Rheoviscometer for High and Extra-High Viscous Liquid Measurements. Viscosity of Vacuum Oils

et al. 2020

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The dynamic viscosities of four high-viscous vacuum oil samples, working liquids (BM-1CM, BM-1CN, LEYBONOL LVO 500, and Alkaren-D24) for diffusion vacuum pumps, have been measured over the temperature range from 298 to 443 K at atmospheric pressure. The measurements were made using a newly designed rheoviscometer based on falling-body and capillary flow techniques. A new design of the rheoviscometer can be used to measure the viscosity of high and extra-high-viscous working liquids (Newtonian) and rheological properties (non-Newtonian liquids) at low temperatures (near the melting temperature). The present design of the rheoviscometer has some advantage over conventional viscometers. For example, it allows us to measure the viscosity of high and extra-high viscous liquids (Newtonian) and rheological properties of non-Newtonian liquids by changing the shear stress. The combined expanded uncertainty of the viscosity, atmospheric pressure, and temperature measurements at the 0.95 confidence level with a coverage factor of k = 2 is estimated to be U r(η) = 2.8%, U r(P) = 0.01, and U(T) = 0.02 K, respectively. For verification of the reliability, accuracy, and correct operation of the newly designed rheoviscometer, the viscosity of the same oil samples were measured using a conventional well-known capillary flow viscometer over the temperature range from 293 to 366 K at atmospheric pressure. The measured viscosity data for vacuum oils were used to estimate physical meaning parameters of the modified (extended) Arrhenius–Andrade and Vogel–Tamman–Fulcher (VTF) models. The derived VTF parameters (Band T 0, δ = B/T 0) were used to estimate the values of the glass temperature for studied vacuum oil samples.

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Viscosity

Cited by 4 publications

References 77 publications

Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

Measurements of the Density, Speed of Sound, Viscosity, and Derived Thermodynamic Properties of Geothermal Fluids

Insights into the Conformation and Self-Association of a Concentrated Monoclonal Antibody using Isothermal Chemical Denaturation and Nuclear Magnetic Resonance

New Design of the Falling-Body Rheoviscometer for High and Extra-High Viscous Liquid Measurements. Viscosity of Vacuum Oils

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