The interaction between convection and axial heat conduction along a pipe is analysed assuming third kind boundary conditions at the outer face of the duct. Wall thickness is assumed to be either uniform or having periodic step variations in the axial direction. Axial heat conduction is found to have a definite influence on the heat flux and the Nusselt number distributions. However, the overall heat flux can accurately be predicted by ordinary methods disregarding axial conduction in the wall.
Conjugated Heat Transfer in a Circular Duct with Uniform and non-Uniform Wall Thickness / Barozzi, Giovanni Sebastiano; G., Pagliarini. - In: INTERNATIONAL JOURNAL OF HEAT AND TECHNOLOGY. - ISSN 0392-8764. - STAMPA. - 2:(1984), pp. 72-91.
Conjugated Heat Transfer in a Circular Duct with Uniform and non-Uniform Wall Thickness
BAROZZI, Giovanni Sebastiano;
1984
Abstract
The interaction between convection and axial heat conduction along a pipe is analysed assuming third kind boundary conditions at the outer face of the duct. Wall thickness is assumed to be either uniform or having periodic step variations in the axial direction. Axial heat conduction is found to have a definite influence on the heat flux and the Nusselt number distributions. However, the overall heat flux can accurately be predicted by ordinary methods disregarding axial conduction in the wall.
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