Convection overview(Cont'd) Same principal applies to any arbitrary shape,not just a flat plate dAs As:Ts Average convection heat transfer coefficient: or,for unit width: d So,we need to know how h varies with x,the distance from the leading edge...... What do you think key parameters that might influence h? Heat Transfer Su Yongkang School of Mechanical Engineering# 8 Heat Transfer Su Yongkang School of Mechanical Engineering Convection overview (Cont’d) • Same principal applies to any arbitrary shape, not just a flat plate • Average convection heat transfer coefficient: So, we need to know how h varies with x, the distance from the leading edge…….. What do you think key parameters that might influence h? q ′′ dAs As Ts , or, for unit width: ∫ = As s s hdA A h 1 ∫ = L hdx L h 0 1