Longitudinal and bulk viscosities of binary fluid mixtures |
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Authors: | A HM Zaheri S Srivastava K Tankeshwar |
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Institution: | (1) Payame noor University of Toyserkan, Toyserkan, Iran;(2) Department of Physics, Panjab University, Chandigarh, 160014, India;(3) Computer Center, Department of Computer Science and Applications, Panjab University, Chandigarh, 160014, India |
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Abstract: | Expressions for zeroth, second and fourth sum rules of longitudinal and bulk
stress auto correlation functions have been derived for binary fluid mixtures.
Longitudinal and bulk viscosities of an Ar–Kr mixture have been calculated using
Mori's memory function formalism coupled with the sum rules of longitudinal and
bulk stress auto correlation functions.
The results obtained are compared with the molecular dynamics
simulation. Mass dependence of the longitudinal and bulk viscosities has
been studied for different compositions
of an isotopic mixture at different densities and temperatures. For very large mass ratio, the
longitudinal and bulk viscosities of the isotopic mixture are more dependent on mole fraction than on mass. |
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Keywords: | 66 20 +d Viscosity of liquids diffusive momentum transport 51 20 +d Viscosity diffusion and thermal conductivity 05 60 Cd Classical transport |
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