Numerical Simulation of Pipeline-Pavement Damage Caused by Explosion of Leakage Gas in Buried PE Pipelines

Table 6

Variation of fracture width with grid number and time step.

Grid number	806772	1207560	1409480	1893344
Fracture width (m)	0.56789	0.44201	0.43871	0.43868
Relative error (%)	28.5		−0.74	−0.75
Time step (s)	8e − 5	1e − 4	5e − 4	1e − 3
Fracture width (m)	0.44195	0.44201	0.44176	0.44239
Relative error (%)	−0.01		−0.05	0.08