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Table 4

Hydraulic head (in meter) obtained by FEM and RPCM for different q values

Node number	Head (FEM))	Head RPCM (q = 0.5)	Absolute % difference	Head RPCM (q = 0.98)	Absolute % difference	Head RPCM (q = 1.03)	Absolute % difference
2	103.16	101.73	1.386	102.17	0.960	102.13	0.998
23	100.30	99.84	0.459	100.56	0.259	100.27	0.030
37	99.30	98.69	0.614	99.89	0.594	99.76	0.463
17	102.47	101.31	1.132	103.47	0.976	103.29	0.800
31	98.92	94.35	4.620	95.40	3.558	95.27	3.690
45	98.15	99.17	1.039	99.26	1.131	99.68	1.559
11	105.35	100.31	4.784	100.01	5.069	100.75	4.366
25	98.15	97.16	1.009	98.75	0.611	98.86	0.723
39	93.62	99.21	5.971	98.03	4.711	97.91	4.582
5	108.34	106.85	1.375	107.22	1.034	107.08	1.163
19	104.04	108.67	4.450	107.56	3.383	108.28	4.075
47	91.26	91.42	0.175	91.65	0.427	92.49	1.348
6	111.65	110.21	1.290	110.84	0.725	111.75	0.090
20	105.16	107.55	2.273	107.92	2.625	108.12	2.815
34	91.18	93.47	2.512	93.26	2.281	93.89	2.972
14	108.49	103.17	4.904	103.42	4.673	103.71	4.406
28	98.69	97.71	0.993	98.50	0.193	99.16	0.476
49	91.74	91.58	0.174	91.83	0.098	92.04	0.327

Node number	Head (FEM))	Head RPCM (q = 0.5)	Absolute % difference	Head RPCM (q = 0.98)	Absolute % difference	Head RPCM (q = 1.03)	Absolute % difference
2	103.16	101.73	1.386	102.17	0.960	102.13	0.998
23	100.30	99.84	0.459	100.56	0.259	100.27	0.030
37	99.30	98.69	0.614	99.89	0.594	99.76	0.463
17	102.47	101.31	1.132	103.47	0.976	103.29	0.800
31	98.92	94.35	4.620	95.40	3.558	95.27	3.690
45	98.15	99.17	1.039	99.26	1.131	99.68	1.559
11	105.35	100.31	4.784	100.01	5.069	100.75	4.366
25	98.15	97.16	1.009	98.75	0.611	98.86	0.723
39	93.62	99.21	5.971	98.03	4.711	97.91	4.582
5	108.34	106.85	1.375	107.22	1.034	107.08	1.163
19	104.04	108.67	4.450	107.56	3.383	108.28	4.075
47	91.26	91.42	0.175	91.65	0.427	92.49	1.348
6	111.65	110.21	1.290	110.84	0.725	111.75	0.090
20	105.16	107.55	2.273	107.92	2.625	108.12	2.815
34	91.18	93.47	2.512	93.26	2.281	93.89	2.972
14	108.49	103.17	4.904	103.42	4.673	103.71	4.406
28	98.69	97.71	0.993	98.50	0.193	99.16	0.476
49	91.74	91.58	0.174	91.83	0.098	92.04	0.327