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The correlation of transport properties of alkali metal vapours and noble gases.
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Orientador(es)
Resumo(s)
It was found that transport properties of gases (viscosity η, thermal conductivity λ, and diffusion coefficients D) in the form of the quantity: C = ηD λT α are temperature independent in the 700–2000K temperature interval. Although the exponent α seems to be independent inside the group for all the monoatomic vapours it seems to change between different groups (α = 1.909±0.015 for alkali metal vapours – Li, Na, K, Rb and Cs; α = 1.72±0.05 for noble gases – He, Ne, Ar, Kr, and Xe). In this approach, transport properties of gases are correlated using only different values of C. This fact was extended to the properties of the binary mixtures of monoatomic and diatomic molecules in the alkali metal vapours, to obtain the mutual diffusion coefficients D12(T, p) and the self-diffusion coefficients of diatomic molecules, D22(T).
Descrição
Copyright © 2004 Elsevier B.V. All rights reserved.
Palavras-chave
Alkali Metal Vapours Dimerization Noble Gases Thermal Conductivity Diffusion Coefficients
Contexto Educativo
Citação
Apelblat, A.; Fialho, Paulo; Nieto de C. C. A. (2005). "The correlation of transport properties of alkali metal vapours and noble gases", «Fluid Phase Equilibria», 227(2): 215-223. http://dx.doi.org/10.1016/j.fluid.2004.11.015.
Editora
Elsevier