A numerical simulation of the convective heat transfer in confined channel flow past square cylinders: comparison of inline and offset tandem pairs

A numerical investigation was conducted to analyze the unsteady flow-field and heat-transfer characteristics for a tandem pair of square cylinders in a laminar channel flow. The drag, lift, and heat transfer coefficients from the downstream heated cylinder due to inline and offset eddy-promoting cylinders were studied. The results show that the drag coefficient and cylinder Nusselt number decrease as the heated cylinder approaches the wall. The highest Strouhal number value is observed in the channel-centered, inline-eddy configuration. Complex periodic vortex shedding develops when the eddy promoter is offset from the primary cylinder.