A DIFFUSION ITERATIVE MODEL FOR SIMULATION OF REACTIVITY DEVICES IN PRESSURIZED HEAVY-WATER REACTORS

被引:12
作者
JAGANNATHAN, V [1 ]
JAIN, RP [1 ]
KUMAR, V [1 ]
GUPTA, HC [1 ]
KRISHNANI, PD [1 ]
机构
[1] BHABHA ATOM RES CTR,DIV THEORET PHYS,BOMBAY 400085,INDIA
关键词
D O I
10.13182/NSE90-A23722
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
A diffusion iterative scheme has been developed to analyze the basic three-dimensional supercell problem encountered in pressurized heavy water reactors (PHWRs). Multigroup transport calculations are performed essentially in one dimension for the fuel cluster cell and the reactivity device (RD) supercell problems. Iterative diffusion calculations are done in one and two dimensions such that the net transport leakages into the fuel cluster or RD are reproduced. The few-group parameters of the fuel cluster or the boundary conditions on the RD surface are modified for this purpose. With these modifications, the three-dimensional supercell problem is treated by diffusion theory. The accuracy of the new scheme is demonstrated against the corresponding transport solutions in both one and three dimensions.
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页码:222 / 238
页数:17
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