Abstract
Numerical simulation on the flow and heat transfer of sinusoidal wavy channel was conducted to investigate the effect of phase-difference between upper and lower wall. The difference was varied from 0 to π. The phase difference induces the dynamic change of flow and heat transfer characteristics. The critical Reynolds number at which flow changes its state from steady to unsteady was found to be lower for a larger phase difference. The heat transfer performance evaluation at constant pumping power base showed that the largest phase difference case(π) was the most preferable among five cases studied.
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