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Thermophysics and Aeromechanics

2010 year, number 1

Heat transfer of non-Newtonian liquid flows in convergent-divergent channels with fourth-kind thermal boundary conditions

G.R. Galiullina, E.K. Vachagina, G.R. Khalitova
Keywords: energy saving, heat-exchange equipment, heat-transfer intensification, convergent-divergent channels, non-Newtonian liquid, plate-type heat exchangers, convective heat transfer, rheological properties, mathematical model, boundary conditions, numerical it
Pages: 93-99

Abstract

In the present paper, we consider the heat transfer of non-Newtonian liquid flows moving in convergent-divergent channels with common boundary. The case of flows moving in opposite directions was addressed. At the common boundary, continuity conditions for temperature and heat flow were adopted. A mathematical model, a calculation algorithm, and simulation data are reported. Plots of numerical data characterizing the channel flows are presented. A comparative analysis of heat transfer in smooth and convergent-divergent channels is given.