Research Article
Resolution of the Generalized Eigenvalue Problem in the Neutron Diffusion Equation Discretized by the Finite Volume Method
Table 11
Biblis reactor power errors (%) corresponding to HOM.
| Node | Structured mesh | Unstructured mesh | 10 cm | 5 cm | 2 cm | 10 cm | 5 cm | 2 cm |
| 1 | 2.284672 | 0.001124 | 0.367491 | 0.879946 | 0.030794 | 0.180845 | 2 | 2.304411 | 0.135778 | 0.367554 | 0.824867 | 0.142893 | 0.191021 | 3 | 2.376446 | 0.134061 | 0.376089 | 0.864341 | 0.162517 | 0.180412 | 4 | 2.376446 | 0.134061 | 0.376089 | 0.864341 | 0.162517 | 0.180412 | 5 | 2.488581 | 0.003299 | 0.489467 | 0.429311 | 0.390778 | 0.228766 | 6 | 1.074203 | 0.220179 | 0.038275 | 0.588963 | 0.054508 | 0.060416 | 7 | 0.934102 | 0.176358 | 0.083588 | 0.479943 | 0.043084 | 0.086734 | 8 | 1.469022 | 0.483910 | 0.021256 | 0.658828 | 0.161010 | 0.032085 | 9 | 0.027694 | 0.558208 | 0.369578 | 0.276270 | 0.457187 | 0.183278 | 10 | 1.969739 | 0.070576 | 0.335412 | 0.446243 | 0.289564 | 0.156511 | 11 | 2.755899 | 0.126755 | 0.433999 | 0.793181 | 0.334266 | 0.202575 | 12 | 1.849153 | 0.858648 | 0.268538 | 1.049713 | 0.424649 | 0.110011 | 13 | 0.442460 | 0.372698 | 0.185346 | 0.282549 | 0.266245 | 0.089598 | 14 | 1.537896 | 0.814179 | 0.251776 | 0.831365 | 0.408647 | 0.095628 | 15 | 1.077245 | 0.592678 | 0.167885 | 0.500974 | 0.281762 | 0.078132 | 16 | 0.221870 | 0.218571 | 0.199870 | 0.032188 | 0.187027 | 0.063343 | 17 | 2.075160 | 0.300133 | 0.189122 | 0.755988 | 0.026896 | 0.045875 | 18 | 2.755899 | 0.126755 | 0.433972 | 0.840364 | 0.366588 | 0.198116 | 19 | 0.014891 | 0.540713 | 0.404170 | 0.298276 | 0.443251 | 0.188347 | 20 | 2.219547 | 0.768456 | 0.099073 | 1.019476 | 0.302488 | 0.036096 | 21 | 0.295151 | 0.629288 | 0.353496 | 0.274481 | 0.436990 | 0.164800 | 22 | 1.672244 | 0.729190 | 0.169991 | 0.865452 | 0.342074 | 0.059898 | 23 | 0.882870 | 0.491431 | 0.140994 | 0.374551 | 0.237709 | 0.074700 | 24 | 0.221876 | 0.218560 | 0.199864 | 0.043428 | 0.188407 | 0.065455 | 25 | 1.969739 | 0.070576 | 0.335412 | 0.473057 | 0.317933 | 0.151979 | 26 | 2.189996 | 0.490979 | 0.095543 | 0.948384 | 0.057490 | 0.051558 | 27 | 0.351107 | 0.582043 | 0.464038 | 0.056930 | 0.475770 | 0.206069 | 28 | 2.368009 | 0.709176 | 0.016244 | 1.057085 | 0.220311 | 0.005560 | 29 | 0.223202 | 0.671285 | 0.391755 | 0.271355 | 0.448080 | 0.172726 | 30 | 1.672244 | 0.729190 | 0.169991 | 0.855210 | 0.346483 | 0.059600 | 31 | 1.077245 | 0.592678 | 0.167868 | 0.535406 | 0.269561 | 0.079436 | 32 | 0.027702 | 0.558224 | 0.369601 | 0.231229 | 0.486828 | 0.179438 | 33 | 2.488581 | 0.003299 | 0.489478 | 0.525898 | 0.439935 | 0.231726 | 34 | 0.717648 | 0.496628 | 0.533502 | 0.053316 | 0.522542 | 0.251418 | 35 | 2.951741 | 0.772375 | 0.049890 | 1.260491 | 0.198974 | 0.034441 | 36 | 0.382809 | 0.717441 | 0.545718 | 0.150071 | 0.595033 | 0.251171 | 37 | 2.368009 | 0.709176 | 0.016217 | 1.041303 | 0.221315 | 0.004546 | 38 | 0.295151 | 0.629279 | 0.353451 | 0.301348 | 0.431097 | 0.163978 | 39 | 1.537890 | 0.814179 | 0.251782 | 0.790510 | 0.415010 | 0.094983 | 40 | 1.469022 | 0.483910 | 0.021268 | 0.718255 | 0.135214 | 0.031668 | 41 | 2.376439 | 0.134061 | 0.376089 | 1.033266 | 0.223136 | 0.182892 | 42 | 3.220990 | 0.751593 | 0.089823 | 1.413971 | 0.171813 | 0.054183 | 43 | 0.764614 | 0.595606 | 0.606721 | 0.003153 | 0.592573 | 0.276228 | 44 | 2.951741 | 0.772375 | 0.049916 | 1.244259 | 0.210189 | 0.034626 | 45 | 0.351107 | 0.582043 | 0.464013 | 0.098390 | 0.470016 | 0.204001 | 46 | 2.219547 | 0.768446 | 0.099092 | 0.984197 | 0.309352 | 0.036133 | 47 | 0.442460 | 0.372698 | 0.185365 | 0.357257 | 0.261884 | 0.086875 | 48 | 0.943520 | 0.185705 | 0.074237 | 0.575157 | 0.042333 | 0.074883 | 49 | 2.304417 | 0.135772 | 0.367517 | 1.003710 | 0.178850 | 0.186330 | 50 | 0.861206 | 0.553378 | 0.631204 | 0.085637 | 0.536703 | 0.290387 | 51 | 3.220990 | 0.751593 | 0.089823 | 1.405356 | 0.184740 | 0.055653 | 52 | 0.717648 | 0.496628 | 0.533502 | 0.092312 | 0.518655 | 0.248030 | 53 | 2.189996 | 0.490979 | 0.095543 | 0.910271 | 0.061734 | 0.046650 | 54 | 0.014881 | 0.540713 | 0.404161 | 0.357925 | 0.437896 | 0.182018 | 55 | 1.849153 | 0.858642 | 0.268519 | 0.983297 | 0.433686 | 0.112597 | 56 | 2.284672 | 0.001134 | 0.367482 | 1.015056 | 0.047411 | 0.185290 |
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