Table 4: 2D homogeneous reactor power errors (%) corresponding to the first eigenvalue.

NodeStructured meshUnstructured mesh
10 cm5 cm2 cm10 cm5 cm2 cm

10.0092060.0000810.0000690.0946290.1312370.018789
20.0056810.0012170.0005590.0059270.0020090.005058
30.0023180.0026750.0011500.0984310.1362120.015750
40.0108020.0016010.0001260.0912230.1253230.007585
50.0141690.0030620.0006840.0007740.0051440.001788
60.0177090.0043480.0011480.0738930.1118930.015444
70.0092060.0000810.0000580.0926360.0966300.020416
80.0056720.0012080.0005770.0068230.0009130.001457
90.0023180.0026860.0011820.0827690.1412820.007689