Hong Feifei

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A numerical study has been made to examine the thermal fields of rectangular impinging jets with different duty cycle(DC), which is defined as the ratio of pulse cycle on-time to off cycle time in one period, inlet Reynolds number and frequency. The Nusselt numbers show best enhancement with DC=1:3, Re=22000 and f=40Hz. The possible reason for this is that(More)
Numerical simulation of unsteady turbulent flow for a rectangular impinging jet is carried out in this paper. The Nusselt number at stagnation point increases as nozzle to plate distance (H/D) increases until H/D=8. This may be caused by nonlinear dynamic effects in momentum and energy transport within the boundary layers. The flow and temperature fields in(More)
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