Fluid flow and heat transfer over a multi-row(l -5 rows) plate-fin and tube heat exchanger are studied numerically. Flow is incompressible, three-dimensional and turbulent. The effects of tube arrangements and tube row numbers are investigated in detail for the Reynolds number Re_H(based on the fin spacing H) ranging from 2000 to 10000. The effects of turbulence are simulated by the k- ε turbulence model. Stream and isothermal lines through the whole tube bank, local and average Nusselt number and pressure coefficient in the streamwise direction are presented. The numerical results for the average heat transfer coefficient agree well with the previously published experimental data.
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