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Help with Rod Bundle Array Flow
Posted Thu May 12, 2005 @04:53PM
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Help Desk Arnie writes "hi

I have this problem in which I have an array of rod bundles. All of them heated. Cooling water is flowing axially through the array. Some of the rod bundles are not heated but have perforations on their periphery through which more cooling water flows in a direction normal to the main axial flow. I want to know regarding analysis of this problem i.e., how do I proceed towards getting an analytical solution to the problem.

If you have any idea about the influencing parameters, please let me know.

Thanks in advance....
waiting for your response...
Arnie"


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  • 'Help with Rod Bundle Array Flow' | Login/Create an Account | 5 comments | Search Discussion

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    Help with Rod Bundle Array Flow (Score:2, Informative)
    by Anonymous on Thu May 12, 2005 @07:53PM EST (#1)
    Print version
    I believe, this is more of like a Heat Exchanger Problem, specifically, cross-flow heat exchanger. You might as well try finding analytical solution with the backdrop of Cross-flow Heat exhanger.
    [ Reply to This Comment ]
    Hmmm - sounds like a water-cooled nuclear reactor (Score:3, Insightful)
    by Boreas on Fri May 13, 2005 @04:22AM EST (#2)
    (User #3937 Info)
    Print version
    Heated cylinder bundles, cooled by an axial stream of water, with spargers adding extra coolant between the bundles. I can't remember exactly whose design was like that, but I'm sure somebody's was.

    As 'Anonymous' points out, the empirical correlations for heat exchangers would be a good basis on which to start, though it might be wise to consider axial flow rather than cross-flow. The spargers will act to reduce the coolant temperature along the length of the heat exchanger, so you'll probably need to correct your 'mixing-cup' temperature in proportion to the amount of coolant sent through the spargers.

    Even if your system isn't actually a nuclear reactor, you might still find appropriate correlations in the literature for nuclear reactor cooling-system design (in particular, articles referring to PWRs) from the pre-CFD era - say, up to the mid 1980s.

    Good luck with your analysis.

    [ Reply to This Comment ]

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