The viscosity of pure monatomic fluids

What is it about?

Calculation the viscosity of pure monatomic fluids in all regions (liquid, gas, and super-critical) .

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Why is it important?

Based on the findings of this paper, prediction of high-pressure liquid and far-super-critical viscosities of a fluid using low-pressure liquid and gaseous EOSs is possible.Furthermore, using this model of viscosity, it is found that there is a temperature that divides the super-critical region into two sub-regions. This temperature (TSC.G) is identical with intersection temperature of gaseous and the near-super-critical EOSs. Super-critical fluid treats as gas when the temperature is higher than TSC.G. Hence, prediction of the far-super-critical viscosity of a fluid with gaseous EOS is possible.In comparison with friction theory EOSs the present model has fewer adjustable parameters. Also it does not require density, which is the most significant advantage of it in comparison with other models, and does not require any additional viscosity correction. The results of the present model show that the proposed model can reproduce viscosities of pure monatomic fluids with good accuracy.

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