| Abstract: |
| We concern heat transfer by forced convection in a channel flow with rough boundary. In heat transfer system, the understanding of roughness-induced effects has been the subject of many studies because there are many practical applications. The problem is that resolving heat transfer motion over the rough surfaces with enforcing boundary condition on the rough geometry is impossible or inefficient in many situations of physical relevance. Therefore, developing an effective model reflecting the effects of the rough boundary is needed. In this talk, we introduce such an effective model in a channel.
As a result, the criteria for the shape of the rough boundary on the heat transfer rate is established. Meanwhile, mathematical justifications for the effective model and wall law model are provided. |
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