2001
DOI: 10.1002/er.759
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A corresponding states predictive viscosity model based on a new scaling parameter: application to hydrocarbons, halocarbons and mixtures

Abstract: SUMMARYA three-parameter corresponding states (CS) model is developed, importing methods formerly studied for the volumetric representation of #uids. The three parameters are critical temperature, pressure and a viscosity scaling factor de"ned from experimental saturated liquid viscosity data or, when these are unavailable, from a single experimental point. Two reference #uids are chosen both for their factor value and because the corresponding viscosity dedicated equations (VDE) are available. On the basis of… Show more

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Cited by 19 publications
(16 citation statements)
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“…This analysis, simply deduced from an heuristic point of view, is sufficient to conclude that the examined fluids have, with respect to the TC, a low degree of conformality. The results of the conformality analysis for TC show a relevant different behavior with respect to that observed for thermodynamic properties [1] and for viscosity [2]. Going back to such studies, the high degree of conformality of these properties, enabled the determination of specific scaling parameters for setting up predictive and generalized models as a direct application of the CS principle.…”
Section: Conformality Analysis Of the Thermal Conductivitymentioning
confidence: 91%
See 1 more Smart Citation
“…This analysis, simply deduced from an heuristic point of view, is sufficient to conclude that the examined fluids have, with respect to the TC, a low degree of conformality. The results of the conformality analysis for TC show a relevant different behavior with respect to that observed for thermodynamic properties [1] and for viscosity [2]. Going back to such studies, the high degree of conformality of these properties, enabled the determination of specific scaling parameters for setting up predictive and generalized models as a direct application of the CS principle.…”
Section: Conformality Analysis Of the Thermal Conductivitymentioning
confidence: 91%
“…The problem is to find a property-specific scalar parameter which allows shifting from the conductivity surface of a reference fluid to one of interest. The procedure for the determination of the scalar parameters is similar to that adopted for viscosity [2] and for recent thermodynamic properties modeling [1]. …”
Section: Excess Term Analysismentioning
confidence: 99%
“…The classical method, common to CS techniques, of modifying the critical properties of the components by suitable mixing rules, is obtained here by a rearrangement of the mixing rules of Wong et al [17], also previously tested for mixture viscosity modeling [13]. The original form has been maintained in this work while only substituting for the acentric factor ω with the new TC specific scalar parameter κ i previously defined.…”
Section: Mixture Model For the Excess Term Contributionmentioning
confidence: 98%
“…Until now, models based on a three-parameter CS scheme have been successfully applied for thermodynamic properties [5][6][7][8][9] and for viscosity [10][11][12][13]. The proposed model extends the potential of CS assuming a fluid specific scaling parameter for TC [14].…”
Section: Introductionmentioning
confidence: 98%
“…The first approach includes predictive or semi-predictive models which are often based on corresponding states theory [1][2][3][4][5][6][7][8][9][10], and in many cases, they can be used to estimate the property with an accuracy level which is considered sufficient for engineering calculations. Theoretically based models, for instance, those including the evaluation of collision integrals, have also been developed.…”
Section: Introductionmentioning
confidence: 99%