Natural Convection Heat Transfer in Eccentric Horizontal Annuli between Heated Outer Tube and Cooled Inner Tube with Different Orientation In the Case of Elliptical Outer Tube

This study conducts numerical analyses and experiments on natural convection heat transfer in an eccentric horizontal annuli between a heated outer tube and a cooled inner tube with different orientation. The outer tube is an elliptical tube, and the inner tube is a cylindrical tube. Experiments are...

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Bibliographic Details
Published inKAGAKU KOGAKU RONBUNSHU Vol. 25; no. 1; pp. 85 - 91
Main Authors HIROSE, KOICHI, HACHINOHE, TOSHITAKA, ISHII, YOUJI
Format Journal Article
LanguageJapanese
Published Tokyo The Society of Chemical Engineers, Japan 10.01.1999
Kagaku Kōgaku Kyōkai
Subjects
eccentricity
elliptical annuli
experiment and numerical analysis
heat transfer
natural convection
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Summary:This study conducts numerical analyses and experiments on natural convection heat transfer in an eccentric horizontal annuli between a heated outer tube and a cooled inner tube with different orientation. The outer tube is an elliptical tube, and the inner tube is a cylindrical tube. Experiments are conducted with the outer tube oriented to the vertical side, and horizontal side, respectively. The numerical analyses were performed by changing the oriented angle and eccentricity parameters. Results obtained for different conditions are presented as temperature profiles, flow patterns, local Nusselt number, and total heat transfer. It is found that the heat transfer enhancement effect or heat transfer obstruction effect for the total heat transfer is changed by eccentricity and oriented angle.
ISSN:0386-216X
1349-9203
DOI:10.1252/kakoronbunshu.25.85