Abstract
The pressure flow of non-Newtonian fluids in an eccentric annular tube with a rotating inner cylinder is numerically calculated by the finite difference method. Results are as follows:1) Flow rate is enhanced by the rotation of inner cylinder.2) With Newtonian fluids axial velocity component is independent of transverse velocity components. Both above velocity components, however, become mutually affected under non-Newtonian viscosities.3) The spread angle of secondary flow with non-Newtonian fluids is less than that of Newtonian fluids.4) The pressure distribution on the outer cylinder is affected by the axial flow. The elasticity of the fluid affects the velocity field little but it influences the pressure distribution on the outer cylinder in such a way to make it asymmetric.
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