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“Deterioration” criteria for convective heat transfer in gas flow through non-circular ducts

The reduction in turbulent, convective heat transfer parameters observed in some supercritical data and in experiments with common gases can be due to radial property variation, acceleration, buoyancy or combinations of these phenomena, depending on the conditions of the applications. To date criter...

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Bibliographic Details
Published in:Nuclear engineering and design 2004-08, Vol.232 (3), p.327-333
Main Authors: McEligot, Donald M., Jackson, J. Derek
Format: Article
Language:English
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Summary:The reduction in turbulent, convective heat transfer parameters observed in some supercritical data and in experiments with common gases can be due to radial property variation, acceleration, buoyancy or combinations of these phenomena, depending on the conditions of the applications. To date criteria for the onsets of these effects have been developed for vertical circular tubes. This note presents extensions of these criteria to non-circular ducts with constant cross-sections as in the cooling channels of some advanced nuclear reactors.
ISSN:0029-5493
0029-5450
1872-759X
1943-7471
DOI:10.1016/j.nucengdes.2004.05.004