| Title |
Investigation of Local Convective Heat Transfer around a Circular Tube in Cross Flow of Air |
| Keywords |
Local Nusselt number ; 국소 Nusselt수 ; Two-dimensional temperature distribution ; 2차원 온도분포 ; Wall heat conduction parameter ; 무차원 열전도계수 ; Shape factor ; 형상계수 |
| 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. |