Abstract: In order to reduce the blindness and complexity of designing heat exchanger fins‚the air flow and heat transfer process on the surface of double／cross-row corrugated fin were simulated by the software of FLUENT．On the basis of the reasonable predigestion of the physical model of heat transfer and by using the standard k-εmodel and the SIMPLE arithmetic of velocity-pressure coupling‚some typical contour charts describing the surface temperature distribution and heat exchange coefficient of the fin were obtained‚and so were the vector charts of the air velocity on the fin surface and the relevant calculated data．The influence of the air velocity in the inlet on the surface temperature‚the air flow‚the heat exchange coefficient‚the heat exchange quantity and the airflow resistance of the fin was also analyzed．It is concluded that the increasing of the air velocity in the inlet will improve the heat exchange ability of the fin‚and increase the energy consumption of the system‚which proves the necessity of the optimization of the system performance for setting the air velocity in the inlet．

Key words:  heat exchanger, fin, temperature field, velocity field, heat transfer coefficient, numerical simulation