HEAT TRANSFER IN A SLOW STEADY FLOW OF AN ELASTICO-VISCOUS FLUID IN A WAVY CYLINDRICAL TUBE

Abstract

The problem of heat transfer due to the steady slow motion of an elastico-viscous fluid in a wavy cylindrical tube has been considered. Taking the deformation  of the boundary to be small the equations  of continuity, momentum and energy have hence solved using the perturbation technique. The solution for the velocity field is employed to study the nature of the temperature distribution when the surface of the tube is rnaintained at a constant temperature.

The velocity field and the vorticity are affected by the 'stress- relaxation time, while the stress, the skin-friction and the temperature distribution are affected by both the stress relaxation and the strain-retardation times. The streamlines and
the isotherms are similar in nature to that observed in the reference 6.