HEAT-TRANSFER ANALYSIS OF VISCO-ELASTIC GIESEKUS FLUID IN A DUCT BETWEEN PARALLEL PLATES AND IN A STRAIGHT PIPE OF A CIRCULAR CROSS-SECTION

摘要

This work aims to conduct numerical simulation to investigate the convective heat transfer of viscoelastic fluids obeying Giesekus model flowing either along straight pipe of circular cross-section or within the space between parallel plates with constant heat flux thermal boundary condition and neglected viscous dissipation. The numerical technique used is based on finite element software (ANSYS Polyflow 14.0) and the obtained numerical solutions are compared against the analytical solution available in literature. The effect of the rheological parameters on the heat transfer enhancement is discussed.