NUMERICAL MODEL OF NONSTATIONARYFLOW OF A VISCOPLASTIC
FLUIDIN A ROTATIONAL VISCOSIMETER

V. P. Beskachko,a O. A. Golovnya,a
and A. E. Korenchenkob

UDC 532.5

The results of numerical solution of the problem on flow
of an incompressible viscoplastic fluid in the gap between two
rotating cylinders have been presented. The criterion of
formation of the boundaries of stagnant zones has been developed.
A comparison of the results of numerical calculations to the
analytical solution has been made. The time of establishment
of stationary flow in the gap has been determined.

aSouth-Ural State University, 76 Lenin Ave., Chelyabinsk, 454080,
Russia; bInstitute of Metallurgy, Ural Branch of the Russian
Academy of Sciences, 101 Amundsen Str., Ekaterinburg, 620016, Russia.
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 80, No. 1, pp. 12-14,
January-February, 2007. Original article submitted July 4, 2005; 
revision submitted October 14, 2005.