Computational Efficiency of Decoupling Approach in Solving Reactive Transport Model: A Case Study of Pyrite Oxidative Dissolution

Table 6

Comparison of solution time in 2D model using iterative solver, GMRES.

Maximum element size	Number of elements	Original solution time,	Decoupled solution time,	%
0.04	7800	89.644	46.923	52.34
0.05	5036	50.955	26.313	51.64
0.08	2038	18.251	8.235	45.12
0.10	1310	11.016	5.062	45.95
0.12	944	7.328	3.454	47.13
0.15	616	4.531	0.812	17.92
0.20	308	2.172	0.484	22.28
0.25	206	1.547	0.406	26.24
0.30	148	1.219	0.360	29.53