Antonin Chapoy*, Friday Junior Owuna, Rod Burgass, Pezhman Ahmadi and Paolo Stringari,
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引用次数: 0
Abstract
A capillary tube viscometer was used to measure the viscosity of the carbon dioxide + methane binary systems (with the mole fraction of CO2 = 0, 0.25 0.50, 0.74, 0.90, and 1) at temperatures between 238.15 and 423.15 K and pressures up to 80 MPa. The new viscosity data were compared against predictions of four types of viscosity models: a corresponding state (CS2) model using two reference fluids, an extended corresponding states (ECS) model, a corresponding states model derived from molecular dynamics simulations of Lennard-Jones fluids, and a residual entropy scaling approach. The required density for viscosity predictions was calculated using Multi-Fluid Helmholtz Energy Approximation (MFHEA) equations of state (EoS). It is found that the deviations of the predicted results and the experimental viscosity data are generally within 2.5% for the SRES model to 4.5% for the CS2 model.
期刊介绍:
The Journal of Chemical & Engineering Data is a monthly journal devoted to the publication of data obtained from both experiment and computation, which are viewed as complementary. It is the only American Chemical Society journal primarily concerned with articles containing data on the phase behavior and the physical, thermodynamic, and transport properties of well-defined materials, including complex mixtures of known compositions. While environmental and biological samples are of interest, their compositions must be known and reproducible. As a result, adsorption on natural product materials does not generally fit within the scope of Journal of Chemical & Engineering Data.