Investigation on Nonlinear Flow Behavior through Rock Rough Fractures Based on Experiments and Proposed 3-Dimensional Numerical Simulation

Table 2

Comparison of flow rate between the experiments and numerical simulation of specimen S1.

Pressure gradient (kPa/m)	Flow rate at outlet (×10^5 m^3/s)
	Experimental value	Simulated value	Relative error
1	0.289	0.239	17.3%
2	0.499	0.449	10.0%
3	0.656	0.633	3.5%
4	0.803	0.794	1.1%
5	0.956	0.938	1.9%
7	1.188	1.189	0.1%
9	1.480	1.402	5.3%
11	1.642	1.589	3.2%
13	1.821	1.756	3.6%