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Science and Technology of Nuclear Installations
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Science and Technology of Nuclear Installations
/
2009
/
Article
/
Tab 4
/
Research Article
Computational Methods for Multidimensional Neutron Diffusion Problems
Table 4
Results for the calculation of
k
for the reflected system.
Nodes
FD
N
BEM
BEM
BEM
1 10 24
1 10 240
1 20 240
4
1
.
0
4
0
2
6
1
.
0
4
9
2
3
1
.
0
4
9
0
5
1
.
0
4
9
1
4
1
.
0
4
9
1
6
8
1
.
0
4
3
7
3
1
.
0
4
9
2
4
1
.
0
4
9
0
6
1
.
0
4
9
2
1
1
.
0
4
9
2
2
1
2
1
.
0
4
5
3
2
1
.
0
4
9
2
4
1
.
0
4
9
0
1
1
.
0
4
9
2
1
1
.
0
4
9
2
2
1
6
1
.
0
4
6
2
0
1
.
0
4
9
2
4
1
.
0
4
8
9
5
1
.
0
4
9
2
1
1
.
0
4
9
2
2
2
0
1
.
0
4
6
7
6
1
.
0
4
9
2
4
1
.
0
4
8
8
9
1
.
0
4
9
2
0
1
.
0
4
9
2
2
2
4
1
.
0
4
7
1
5
1
.
0
4
9
2
4
1
.
0
4
8
8
3
1
.
0
4
9
1
9
1
.
0
4
9
2
2
2
8
1
.
0
4
7
4
3
1
.
0
4
9
2
4
1
.
0
4
8
7
7
1
.
0
4
9
1
9
1
.
0
4
9
2
1
3
2
1
.
0
4
7
6
4
1
.
0
4
9
2
4
1
.
0
4
8
7
1
1
.
0
4
9
1
8
1
.
0
4
9
2
1
3
6
1
.
0
4
7
8
1
1
.
0
4
9
2
4
1
.
0
4
8
6
5
1
.
0
4
9
1
8
1
.
0
4
9
2
1
4
0
1
.
0
4
7
9
5
1
.
0
4
9
2
4
1
.
0
4
8
5
9
1
.
0
4
9
1
7
1
.
0
4
9
2
0
