Viscosity correlation for n-butane in the fluid region

Vogel, E.; Küchenmeister, Cornelia; Bich, Eckard

doi:10.1068/htrt154

Cited by 34 publications

(42 citation statements)

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“…there exist reliable correlations of the zero-density viscosity [12,[4][5][6][7][8][9][10], with well-defined uncertainty limits, based on the critical assessment of the available experimental data. For the purposes of this work we used these correlations summarized in Table 1, within their temperature range, as the primary data.…”

Section: For Nine N-alkanes (Methane To N-butane N-hexane To N-octanmentioning

confidence: 99%

“…For a number of n-alkanes (methane to n-butane, n-hexane to n-octane, n-decane, ndodecane) [3][4][5][6][7][8][9][10] there exist accurate and reliable correlations of viscosity that cover a wide range of temperatures and pressures, with well-defined estimates of uncertainty. Such correlations are based on the best available experimental data, selected on the basis of a critical analysis of the measurement methods and complemented with guidance, to the functional form of the correlation, available from theory.…”

Section: Introductionmentioning

confidence: 99%

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Extended hard-sphere model for predicting the viscosity of long-chain n-alkanes

Riesco

Vesovic

2016

Fluid Phase Equilibria

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An extended hard-sphere model is presented that can accurately and reliably predict the viscosity of long chain n-alkanes. The method is based on the hard-sphere model of Dymond and Assael, that makes use of an universal function relating reduced viscosity to reduced volume. The existing expression for the molar core volume is extrapolated to long chain n-alkanes, while the roughness factor is determined from experimental data. A new correlation for roughness factor is developed that allows the extended model to reproduce the available experimental viscosity data on long chain n-alkanes up to tetracontane (n-C 40 H 82 ) within ±5 %, at pressure up to 30 MPa. In the dilute gas limit a physically realistic model, based on Lennard-Jones effective potential, is proposed and used to evaluate the zero-density viscosity of n-alkanes to within ±2.4 %, that is better than currently available.

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Section: For Nine N-alkanes (Methane To N-butane N-hexane To N-octanmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Extended hard-sphere model for predicting the viscosity of long-chain n-alkanes

Riesco

Vesovic

2016

Fluid Phase Equilibria

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“…94 The enhancement is significant only in a relative narrow window in temperature and density round the critical point. 2,7 Based on the previous studies, 3,5,6,[8][9][10][11][12][13][15][16][17][18] the viscosity critical enhancement of m-xylene is taken as zero. The total lack of industrial applications of m-xylene near its critical temperature and the existence of an only single experimental viscosity datum 39 further supports this choice.…”

Section: The Critical Enhancement and The Residual Viscosity Termsmentioning

confidence: 99%

“…This information is complemented with guidance available from theory to produce accurate, consistent, and theoretically sound representations of the transport properties over the widest range of thermodynamic states possible. The first fluid studied in this program was carbon dioxide 2 and since then a plethora of viscosity correlations have been produced, using the same philosophy, covering among others: simple fluids, 3-5 alkanes [6][7][8][9][10][11][12][13] and water. 14 Recently the work has been extended to cyclic and aromatic hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%

Reference Correlation of the Viscosity of meta-Xylene from 273 to 673 K and up to 200 MPa

Cao

Meng

et al. 2016

Journal of Physical and Chemical Reference Data

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A new correlation for the viscosity of meta-xylene (m-xylene) is presented. The correlation is based upon a body of experimental data that has been critically assessed for internal consistency and for agreement with theory. It is applicable in the temperature range from 273 K to 673 K at pressures up to 200 MPa. The overall uncertainty of the proposed correlation, estimated as the combined expanded uncertainty with a coverage factor of 2, varies from 1 % for the viscosity at atmospheric pressure to 5 % for the highest temperatures and pressures of interest. Tables of the viscosity, generated by the relevant equations, at selected temperatures and pressures, and along the saturation line, are provided.-1 -CONTENTS

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“…This information is complemented with guidance available from theory to produce accurate, consistent, and theoretically sound representations of the transport properties over the widest range of thermodynamic states possible. The first fluid studied in this program was carbon dioxide, 6 and since then a plethora of viscosity correlations have been produced, using the same philosophy, covering among others: simple fluids, [7][8][9] alkanes, [10][11][12][13][14][15][16][17] and water. 18 The present study is a continuation of this effort.…”

Section: Introductionmentioning

confidence: 99%