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Sato, Satoshi; Takatsu, Hideyuki; *; Iida, Hiromasa; Mori, Seiji*; R.Santoro*
Fusion Engineering and Design, 42, p.213 - 219, 1998/00
Times Cited Count:1 Percentile:15.02(Nuclear Science & Technology)no abstracts in English
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PNC TN9410 96-102, 40 Pages, 1996/04
In designing the shield plug of LMFBR, it is important to evaluate the thermal response between the cover gas thermal-hydraulics and the temperature fields of the shield plug at the same time. Based on the experiments which were performed by OEC, the natural convection and the thermal radiation in the cover gas layer were calculated with the structure simulating the shield plug in a detail two-dimensional model. The calculations were carried out for 8 kinds of experimental RUNs using a FLUSH code. The main results were as follows: (1)For these 8 kinds of experimental RUNs, the velocity and the temperature distributions in the cover gas layer were presented. The radial and axial temperature distributions in the rotating plug were also presented, which were difficult to measure by the experiments. (2)The boundary surface temperature between the cover gas layer and the rotating plug had the same tendencies and the calculated average temperatures on the boundary surface had good agreements with the experimental data. The average relative deviations from experimental values were less than 1.3%. (3)The natural convection of the cover gas enhanced the temperature distributions in the structure. The effects of thermal radiation on the heat transfer was relatively small and it can be neglected when the temperature of the heated aluminum disk is less than 400C.
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PNC TN9410 88-182, 70 Pages, 1988/12
The FLUSH, which has been developed for the purpose of calculating the interaction between thermal-hydraulics and thermal structural responses, was validated through the calculation of SPINTA and the comparizon of its experimental results. The results obtained are as follows; (1)The temperature distributions of the shield plug were able to simulate within 17% error of the experimental results, (2)The thermal stress distributions were normally calculated, (3)The iteration was converged in 0.27% of the norm of temperature. and it took about 122 minutes as the total CPU time of the calculation. These results show that even the large components of FBR can be analysed sufficiently and accurately in reasonable CPU time through the FLUSH.