MATHEMATICAL SIMULATION OF THE SWIRLING FLOW OF A THERMOVISCOUS, PSEUDOPLASTIC SISCO FLUID IN A CYLINDRICAL CHANNEL

The swirling fl ow of a thermoviscous, pseudoplastic Sisco fl uid in a cylindrical channel was investigated. It was established that, in the case of irrotational fl ow of a pseudoplastic fl uid in such a channel, the effective viscosity of the fl uid in the neighborhood of the channel axis is substantially increased. A swirling of this fl ow leads to an increase in the rate of shear deformation of the fl uid in the axial region of the fl ow and to a decrease in its effective viscosity. As the swirling of the fl ow in the channel increases, the fl uid near the channel walls and the fl uid at the boundary of the recirculation zone are subjected to a dissipative heating leading to a decrease in their effective viscosity. The intensity heating of the fl uid in the channel increases with increase in the rate of swirling (the Rossby number) of its fl ow.
   
Author:  O. V. Matvienko and A. E. Aseeva
Keywords:  rheology, non-Newtonian fl uid, thermoviscous fl uid, pseudoplastic Sisco fl uid, heat exchange, swirling fl ow, viscous dissipation, computational hydrodynamics
Page:  827