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Current issue   Ukr. J. Phys. 2017, Vol. 62, N 8, p. 672-678
https://doi.org/10.15407/ujpe62.08.0672    Paper

Makhlaichuk V.N.

I.I. Mechnikov National University of Odesa
(2, Dvoryans’ka Str., Odesa 65026, Ukraine; e-mail: interaktiv@ukr.net)

Kinematic Shear Viscosity of Liquid Alkaline Metals

Section: Soft Matter
Original Author's Text: Ukrainian/English

Abstract: The origin of kinematic shear viscosity in liquid alkaline metals has been studied. It is shown
that, since the depth of the well in the potential of pair interaction between ions is small in
comparison with the energy of thermal motion of those ions, the mechanism of kinematic shear
viscosity formation is not an activation one. The main mechanism consists in the momentum
transfer from one layer to another and depends on the layer “roughness”. In accordance with
the generalized similarity principle, liquid alkaline metals are shown to belong to the same
similarity class, and a similar character of changes in the isobars of the kinematic shear viscosity of liquid alkaline metals is observed only if this principle is applicable. A formula for the
kinematic shear viscosity is proposed. The agreement of the results obtained with experimental
data is quite satisfactory.

Key words: kinematic shear viscosity, liquid alkaline metals.


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