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.

NodeStructured meshUnstructured mesh
10 cm5 cm2 cm10 cm5 cm2 cm

12.2846720.0011240.3674910.8799460.0307940.180845
22.3044110.1357780.3675540.8248670.1428930.191021
32.3764460.1340610.3760890.8643410.1625170.180412
42.3764460.1340610.3760890.8643410.1625170.180412
52.4885810.0032990.4894670.4293110.3907780.228766
61.0742030.2201790.0382750.5889630.0545080.060416
70.9341020.1763580.0835880.4799430.0430840.086734
81.4690220.4839100.0212560.6588280.1610100.032085
90.0276940.5582080.3695780.2762700.4571870.183278
101.9697390.0705760.3354120.4462430.2895640.156511
112.7558990.1267550.4339990.7931810.3342660.202575
121.8491530.8586480.2685381.0497130.4246490.110011
130.4424600.3726980.1853460.2825490.2662450.089598
141.5378960.8141790.2517760.8313650.4086470.095628
151.0772450.5926780.1678850.5009740.2817620.078132
160.2218700.2185710.1998700.0321880.1870270.063343
172.0751600.3001330.1891220.7559880.0268960.045875
182.7558990.1267550.4339720.8403640.3665880.198116
190.0148910.5407130.4041700.2982760.4432510.188347
202.2195470.7684560.0990731.0194760.3024880.036096
210.2951510.6292880.3534960.2744810.4369900.164800
221.6722440.7291900.1699910.8654520.3420740.059898
230.8828700.4914310.1409940.3745510.2377090.074700
240.2218760.2185600.1998640.0434280.1884070.065455
251.9697390.0705760.3354120.4730570.3179330.151979
262.1899960.4909790.0955430.9483840.0574900.051558
270.3511070.5820430.4640380.0569300.4757700.206069
282.3680090.7091760.0162441.0570850.2203110.005560
290.2232020.6712850.3917550.2713550.4480800.172726
301.6722440.7291900.1699910.8552100.3464830.059600
311.0772450.5926780.1678680.5354060.2695610.079436
320.0277020.5582240.3696010.2312290.4868280.179438
332.4885810.0032990.4894780.5258980.4399350.231726
340.7176480.4966280.5335020.0533160.5225420.251418
352.9517410.7723750.0498901.2604910.1989740.034441
360.3828090.7174410.5457180.1500710.5950330.251171
372.3680090.7091760.0162171.0413030.2213150.004546
380.2951510.6292790.3534510.3013480.4310970.163978
391.5378900.8141790.2517820.7905100.4150100.094983
401.4690220.4839100.0212680.7182550.1352140.031668
412.3764390.1340610.3760891.0332660.2231360.182892
423.2209900.7515930.0898231.4139710.1718130.054183
430.7646140.5956060.6067210.0031530.5925730.276228
442.9517410.7723750.0499161.2442590.2101890.034626
450.3511070.5820430.4640130.0983900.4700160.204001
462.2195470.7684460.0990920.9841970.3093520.036133
470.4424600.3726980.1853650.3572570.2618840.086875
480.9435200.1857050.0742370.5751570.0423330.074883
492.3044170.1357720.3675171.0037100.1788500.186330
500.8612060.5533780.6312040.0856370.5367030.290387
513.2209900.7515930.0898231.4053560.1847400.055653
520.7176480.4966280.5335020.0923120.5186550.248030
532.1899960.4909790.0955430.9102710.0617340.046650
540.0148810.5407130.4041610.3579250.4378960.182018
551.8491530.8586420.2685190.9832970.4336860.112597
562.2846720.0011340.3674821.0150560.0474110.185290