A Quasi-3D Numerical Model for Grout Injection in a Parallel Fracture Based on Finite Volume Method

Table 5

Average flow velocity at different radiuses at t=40 s in Case 1.

Radius; r (m)	Average flow velocity u
	Analytical; (cm/s)	Quasi-3D model; (cm/s)	Fluent_2l; (cm/s)	Fluent_6l; (cm/s)	Relative errors (%)
					Quasi-3D model	Fluent_2l	Fluent_6l
0.05	6.0000	6.1140	3.9987	5.6874	1.90	33.36	5.21
0.10	3.0000	3.0308	1.9992	2.8418	1.03	33.36	5.27
0.15	2.0000	2.0083	1.3328	1.8943	0.42	33.36	5.28
0.20	1.5000	1.5035	0.9996	1.4204	0.23	33.36	5.31
0.25	1.2000	1.2017	0.7997	1.1360	0.14	33.36	5.33
0.30	1.0000	1.0007	0.6664	0.9462	0.07	33.36	5.38
0.35	0.8571	0.8570	0.5712	0.8103	0.01	33.36	5.46
0.40	0.7500	0.7494	0.4998	0.7081	0.08	33.36	5.59
0.45	0.6667	0.6729	0.4442	0.6282	0.93	33.37	5.77
Average relative errors (%)					0.53	33.36	5.40