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Investigation of Local Convective Heat Transfer around a Circular Tube in Cross Flow of Air  

이억수 (부경대학교 기계공학부)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.16, no.6, 2004 , pp. 546-555 More about this Journal
Abstract
With circular tube heated directly or indirectly placed in a cross flow, heat flows circumferentially by conduction due to the asymmetric nature of the fluid flow around the perimeter of the circular tube. The circumferential heat flow affects the wall temperature distribution to such an extent that in some cases. The effects of circumferential wall heat conduction on local convective heat transfer is investigated. The wall heat conduction parameter which can be deduced from the governing energy equation should be used to express the effect of circumferential heat conduction. Two-dimensional temperature distribution is presented through the numerical analysis. The comparison of one-dimensional and two-dimensional solutions is demonstrated on graph of local Nusselt numbers.
Keywords
Local Nusselt number(Nusselt); Two-dimensional temperature distribution; Wall heat conduction parameter; Shape factor;
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  • Reference
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