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Accession number;06A0511423
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| Title;Numerical Analysis of CCFL in Perforated Thick Plate using Extended Two-Fluid Model |
| Author;
MINATO AKIHIKO
(Hitachi, Ltd., Power & Industrial Systems R & D Lab., JPN)
MISAWA MASAKI
(National Inst. Advanced Industrial Sci. and Technol., Advanced Manufacturing Res. Inst., JPN)
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Journal Title;Transactions of the Atomic Energy Society of Japan
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Journal Code:L4596A
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ISSN:1347-2879
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VOL.5;NO.2;PAGE.96-102(2006)
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| Figure&Table&Reference;FIG.13, REF.10 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Intermittent and heterogeneous behavior caused by interface motion is important for gas-liquid two-phase flow dynamics. Its complex characteristics are commonly treated with constitutive equations obtained from experimental database in the conventional two-fluid model. Numerical simulation by the extended two-fluid model, developed to calculate interface motion directly, can be an alternative tool to a part of experiments. Correlation of CCFL, counter current flow limiting, of upper tie plate is important for coolability assessment of BWR fuel assembly during LOCA conditions. Air-water CCFL experiments of a perforated thick plate were performed, and the falling water flow rates were measured as a function of upward air supply. Three-dimensional simulation of the experiments using the extended two-fluid model predicted the observed CCFL characteristics within data scatter. It is expected the simulations by the extended two-fluid model is useful to actual tie plate design of future reactor fuels. (author abst.) |
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