RHEOLOGICAL PROPERTIES OF FLOWS OF A DENSE
GAS AND LIQUIDS IN NARROW SLOT-LIKE PORES

Yu. K. Tovbin, L. K. Zhidkova, and E. E. Gvozdeva

UDC 533.7+541:183

The concentration dependences of the coefficients of shear 
viscosity of molecules in a wide range of pore fillings (from a rarefied 
gas to a liquid state) for different potentials of molecule-surface 
interactions have been theoretically investigated with the use of 
the lattice-gas model allowing for the volume occupied by atoms and 
the interaction between the atoms in the quasichemical approximation. 
This model allows one to find the self-consistent equilibrium characteristics 
of a vapor-liquid system and the coefficients of shear viscosity of 
molecules with the use of a single set of energy parameters. Molecular 
interpretation of the coefficient of sliding friction of the fluid 
near the pore walls is discussed.

State Scientific Center of the Russian Federation "L. Ya. Karpov 
Scientific-Research Physicochemical Institute", Moscow, Russia; 
email: tovbin@cc.nifhi.ac.ru. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 76, No. 3, pp. 124-130, May-June, 2003. Original 
article submitted September 6, 2002.